Life Sciences P1 June Exam (Meduim)

Which reproductive strategy involves the release of eggs and sperm into the water for fertilization?

What is a key advantage of external fertilization?

Why does internal fertilization provide a higher likelihood of successful fertilization?

Which statement is true about external fertilization?

Why is external fertilization common among aquatic animals?

Which reproductive mode provides protection to the developing embryo and increases the chances of successful reproduction in varied environments?

What is a key advantage of precocial species' developmental strategy?

Which type of animals retain eggs within the mother's body until they are ready to hatch?

Which evolutionary advancement provides a self-contained aquatic environment for the developing embryo, protecting it from dehydration and physical harm?

Where are the testes located in the male reproductive system?

What is the function of Cowper’s Gland in the male reproductive system?

Which male reproductive organ is responsible for neutralizing the acidic vaginal environment?

What is the primary hormone that stimulates male puberty?

Which part of the sperm cell contains enzymes essential for penetrating the egg cell during fertilization?

What hormone drives female puberty?

What is the primary structure in a sperm cell's head?

What process involves the production of female gametes in the ovaries?

Which hormone stimulates one follicle each cycle in females?

During which phase of the menstrual cycle does the endometrium break down and shed?

What hormone is responsible for stimulating the development of the follicle in the ovaries?

What is the process called when the Graafian follicle releases an egg cell?

Which hormone is responsible for thickening the endometrium in the uterus?

What is the name given to a diploid cell formed by the fusion of an ovum and a sperm cell?

After fertilization, what structure does the morula develop into?

What is the role of the umbilical artery in the placental system?

Which term describes a fluid-filled sac that encases the developing embryo?

What is the primary purpose of the autonomic nervous system?

Grey matter of the brain and spinal cord mainly consists of:

What is the function of effectors in the nervous system?

Which part of the brain is responsible for coordinating all voluntary movements and maintaining balance?

What is the primary function of the hypothalamus in the brain?

What is the role of sensory (afferent) neurons in the nervous system?

What is the function of the spinal cord in the central nervous system?

Which part of the peripheral nervous system controls involuntary muscles like heartbeat and digestion?

Which branch of the autonomic nervous system is responsible for preparing the body for emergency situations?

What is the role of adrenaline in the autonomic nervous system?

Where are interneurons primarily found in the nervous system?

Which part of a neuron is responsible for transmitting impulses away from the cell body?

What is the function of sensory neurons in the nervous system?

Which of the following is an advantage of ovipary as a reproductive mode?

What is a characteristic of altricial species in terms of their offspring?

Which evolutionary advancement provides a self-contained aquatic environment for the developing embryo?

What is the primary function of the male testes in the reproductive system?

Which statement best describes parental care in vertebrates?

Which hormone drives male gamete (sperm cell) production within the male reproductive organs?

During oogenesis, how many haploid cells are usually produced, but only one survives to become a mature ovum?

What is the primary function of the acrosome in a sperm cell during fertilization?

Which hormone regulates the enlargement of one cell within a follicle that undergoes meiosis during oogenesis?

What is the function of the tail in a sperm cell?

What is the role of the corpus luteum during the menstrual cycle?

Which hormone is responsible for thickening the endometrium in the uterus?

What process involves the formation of a blastocyst?

During which stage of the menstrual cycle does the corpus luteum shrink if fertilization does not occur?

What is the function of extra-embryonic membranes like chorion in the gestation process?

What is the process called when the zygote divides by mitosis to form a morula and then a blastocyst?

Which structure connects the embryo to the placenta in the development of the fetus?

What is the primary function of the amniotic fluid during fetal development?

Which type of neurons are responsible for transmitting impulses towards the central nervous system?

Grey matter in the nervous system primarily consists of which cellular components?

What is the primary function of the Cowper’s Gland in the male reproductive system?

Which structure is responsible for neutralizing the acidic environment of the vagina to protect sperm in the female reproductive system?

What is the primary role of the fallopian tubes in the female reproductive system?

Which hormone primarily stimulates male puberty?

What is the function of the seminal vesicles in the male reproductive system?

What is the primary function of the medulla oblongata in the brain?

Which part of the brain plays a key role in maintaining the body's homeostasis?

What is the main function of the corpus callosum in the brain?

Which part of the nervous system controls conscious movements and sensory information processing?

What is the role of interneurons in the nervous system?

Which branch of the autonomic nervous system is responsible for restoring the body to a normal state after an emergency has passed?

What type of neurons transmit impulses from the brain and spinal cord to effectors like muscles and glands?

Which part of a neuron is responsible for transmitting impulses away from the cell body?

What do interneurons primarily do in the nervous system?

Which part of the autonomic nervous system prepares the body for emergency situations?

What is a key advantage of internal fertilization in vertebrates?

Why is external fertilization advantageous for aquatic animals?

Which evolutionary advantage does internal fertilization provide terrestrial animals?

What environmental conditions are necessary for external fertilization to occur effectively?

How does internal fertilization increase the likelihood of successful reproduction compared to external fertilization?

What is a key advantage of internal fertilization over external fertilization for terrestrial animals?

Which statement best describes the advantage of external fertilization in aquatic animals?

Why does external fertilization require specific environmental conditions like water?

What evolutionary advantage does the diversity of reproductive strategies offer vertebrates?

In what way does internal fertilization contribute to the reproductive success of vertebrates?

Which hormone primarily drives female puberty?

What is the primary function of the acrosome in a sperm cell during fertilization?

What is the role of the corpus luteum during the menstrual cycle?

Which male reproductive organ contributes to neutralizing the acidic vaginal environment?

What stimulates the enlargement of one cell within a follicle that undergoes meiosis during oogenesis?

What is the function of the umbilical cord in the development of the fetus?

During ovulation, what happens in the female reproductive system?

Which term refers to the process of embedding the embryo into the endometrium?

What is the primary role of synapses in the nervous system?

Which component of the nervous system is responsible for regulating involuntary bodily functions?

What triggers the release of an egg cell during ovulation?

What is the fate of the corpus luteum if fertilization occurs?

What is the role of oestrogen in the menstrual cycle?

Which hormone is responsible for preventing menstruation after ovulation?

What transformation does the Graafian follicle undergo post-ovulation?

Which part of the brain acts as a control center for autonomic functions such as hunger, thirst, sleep, body temperature, and emotions?

What is the primary role of the spinal cord in the central nervous system?

Which type of neurons transmit impulses from the brain and spinal cord to effectors like muscles and glands?

What is the main function of the Somatic Nervous System in the peripheral nervous system?

What is the key role of the Corpus Callosum in the brain?

What is the main function of the autonomic nervous system?

Which branch of the autonomic nervous system is responsible for preparing the body for emergency situations?

Where are interneurons primarily found in the nervous system?

What is the role of adrenaline in the autonomic nervous system?

Which type of neurons are responsible for transmitting impulses towards the central nervous system?

Which reproductive mode combines aspects of both ovipary and vivipary, providing protection to the eggs while avoiding metabolic costs associated with true vivipary?

What is the advantage of precocial species' developmental strategy?

What evolutionary advancement provides a self-contained aquatic environment for the developing embryo, protecting it from dehydration and physical harm?

Which male reproductive organ is responsible for producing sperm cells and the hormone testosterone?

What is the main function of parental care in vertebrates?

Where are the testes located in the male reproductive system?

What is the function of the Fallopian Tubes in the female reproductive system?

What is the primary role of the Prostate Gland in the male reproductive system?

What is the function of the Endometrium in the female reproductive system?

Which structure in a sperm cell contains enzymes essential for penetrating the egg cell during fertilization?

What is a key advantage of external fertilization for vertebrates?

Why does internal fertilization provide a higher likelihood of successful fertilization compared to external fertilization?

In what way does external fertilization differ from internal fertilization?

What is a primary advantage of internal fertilization over external fertilization for vertebrates?

How do the diversity of reproductive strategies contribute to the evolutionary biology of vertebrates?

What is the main advantage of ovipary as a reproductive mode?

Which developmental strategy results in potentially higher brain mass and more complex behaviors in adulthood?

What is the key aspect of the amniotic egg that enables reptiles, birds, and certain mammals to reproduce away from water bodies?

Which statement best describes parental care in vertebrates?

What is the primary function of the amniotic fluid during fetal development?

What is the primary function of the acrosome in a sperm cell during fertilization?

Which hormone drives male gamete (sperm cell) production within the male reproductive organs?

What is the primary structure in a sperm cell's head?

Which cellular component primarily provides essential nutrients for the developing egg in the female reproductive system?

What is the role of follicle-stimulating hormone (FSH) in the female reproductive system?

What is the term used to describe the developmental stage of the embryo after 12 weeks of gestation?

Where does implantation of the embryo take place in the female reproductive system?

Which structure develops from the zygote's outer membrane and grows into the uterine tissue to form the placenta?

What is the function of the amniotic fluid surrounding the developing embryo?

Which type of neurons are responsible for transmitting impulses away from the central nervous system to effectors like muscles or glands?

Where does sperm mature and get stored after being produced in the testes?

What is the primary function of the Cowper’s Gland (Bulbourethral Gland) in the male reproductive system?

What is the function of the vas deferens (sperm duct) in the male reproductive system?

What is the primary function of the Uterus in the female reproductive system?

What is the structure responsible for expelling semen and urine out of the male body?

What is the primary function of the cerebellum in the brain?

Which part of the brain is responsible for interpreting sensations from sense organs?

What is the main purpose of the corpus callosum in the brain?

Which nervous system controls involuntary muscles in the body?

What is the primary function of motor (efferent) neurons in the nervous system?

What is the main function of the corpus luteum during the menstrual cycle?

What triggers the release of an egg cell during ovulation?

Which hormone is responsible for thickening the endometrium in preparation for a potential pregnancy?

What happens if fertilization does not occur during the menstrual cycle?

What initiates the breakdown of the endometrium and the onset of menstruation?

What is the main function of the autonomic nervous system?

Which branch of the autonomic nervous system is responsible for preparing the body for 'fight or flight' situations?

Which part of a neuron is responsible for transmitting impulses towards the central nervous system?

What is the role of interneurons in the nervous system?

What is the function of adrenaline in the autonomic nervous system?

What is a key advantage of internal fertilization for terrestrial animals compared to external fertilization?

Why does external fertilization require specific environmental conditions like water to be successful?

What evolutionary advantage does external fertilization offer aquatic animals?

How does internal fertilization increase the likelihood of successful fertilization?

Which reproductive strategy is more advantageous in environments with high mortality rates due to its ability to produce a large number of offspring?

What is the primary function of the seminal vesicles in the male reproductive system?

Which male reproductive organ is responsible for producing an alkaline fluid that neutralizes the acidic environment of the vagina?

Where does the process of fertilization typically occur in the female reproductive system?

What is the primary role of the epididymis in the male reproductive system?

Which female reproductive structure serves as the birth canal during childbirth?

What is the term used to describe the process where the egg cell and sperm cell fuse to form a zygote?

Which part of the female reproductive system does the zygote embed itself into during the process of implantation?

What structures develop from the outer membrane of the zygote and grow into the uterine tissue to form the placenta?

Which system consists of sympathetic and parasympathetic divisions, regulating involuntary bodily functions?

Which type of neurons are specialized nerve cells responsible for transmitting impulses within the nervous system?

Which branch of the autonomic nervous system is responsible for the 'fight or flight' response?

What is the primary function of Interneurons in the nervous system?

What is the role of adrenaline in the autonomic nervous system?

Where do sensory neurons transmit impulses to in the nervous system?

What is the function of the Myelin Sheath in a nerve cell?

What happens on Day 14 of the menstrual cycle?

Which hormone stimulates the development of the follicle in the ovaries?

What triggers the shedding of the endometrial lining if fertilization does not occur?

What is the process where the zygote embeds itself into the endometrium called?

Which structure develops from the blastocyst and contributes to placenta formation?

What is the primary hormone that drives female puberty?

Which hormone primarily drives male gamete (sperm cell) production within the male reproductive organs?

During fertilization, what is the primary function of the acrosome in a sperm cell?

What contributes to the sex determination of offspring based on the information provided?

What is the primary role of mitochondria in a sperm cell?

What is the primary role of the hypothalamus in the brain?

Which part of the peripheral nervous system controls voluntary muscles for reactions to external changes?

What is the main function of sensory (afferent) neurons in the nervous system?

Which part of the brain is responsible for controlling involuntary actions like heartbeat and breathing?

What is the primary function of the corpus callosum in the brain?

Which reproductive mode allows parents to produce many offspring simultaneously, spreading the risk of individual predation and increasing the chances of species survival?

What evolutionary advancement provides a self-contained aquatic environment for the developing embryo, protecting it from dehydration and physical harm?

Which developmental strategy reduces the burden of extensive parental care by allowing the young to fend for themselves against predators shortly after birth?

What is the primary function of the male testes in the reproductive system?

Which part of the autonomic nervous system is responsible for preparing the body for emergency situations?

Which reproductive mode allows parents to produce many offspring simultaneously, spreading the risk of individual predation and increasing species survival chances?

Which hormone primarily drives female puberty?

What is the role of the corpus luteum during the menstrual cycle?

During spermatogenesis, what is the role of testosterone?

Which hormone stimulates the thickening of the endometrium after ovulation?

What is the primary function of the acrosome in a sperm cell?

During which phase of the menstrual cycle does the corpus luteum shrink if fertilization does not occur?

Which hormone stimulates the enlargement of a follicle cell for meiosis during oogenesis?

What regulates the complex process of the menstrual cycle?

What happens if fertilization occurs during the menstrual cycle?

Which hormone is responsible for transforming the ruptured Graafian follicle into the corpus luteum?

Which part of the brain is responsible for coordinating all voluntary movements and maintaining balance?

What is the main function of the Medulla Oblongata in the brain?

Which type of neurons detect stimuli and transmit impulses from sense organs to the brain?

What is the primary role of the Corpus Callosum in the brain?

Which part of the nervous system controls involuntary muscles like the heartbeat?

What is a key advantage of external fertilization in vertebrates?

How does internal fertilization differ from external fertilization in vertebrates?

Why is internal fertilization advantageous for terrestrial animals?

Which aspect of external fertilization poses a challenge for aquatic animals?

What role do reproductive strategies play in the adaptive responses of vertebrates?

Which branch of the autonomic nervous system is responsible for preparing the body to react during stressful situations?

What is the main function of motor neurons in the nervous system?

Where are interneurons primarily found in the nervous system?

Which part of a neuron covers the axon, speeds up signal transmission, and provides insulation?

What is the function of Sensory (Afferent) Neurons in the nervous system?

What is the primary role of the umbilical cord in the development of the fetus?

Which structure in the human nervous system is responsible for regulating involuntary bodily functions?

What is the function of synapses in the nervous system?

What is the primary function of the seminal vesicles in the male reproductive system?

Which part of the embryo develops into finger-like structures called villi after implantation?

Which male reproductive organ is responsible for releasing a mucus-like fluid to lubricate the urethra for easier sperm passage?

Where are sperm cells primarily stored after maturation in the male reproductive system?

What is the primary function of the acrosome in a sperm cell during fertilization?

Which female reproductive organ is responsible for connecting the ovaries to the uterus and serves as the site of fertilization?

What is a key advantage of internal fertilization in vertebrates compared to external fertilization?

Why do terrestrial animals rely on internal fertilization rather than external fertilization?

What environmental condition is essential for external fertilization to occur in vertebrates?

Which animals are more likely to adopt external fertilization as a reproductive strategy?

What advantage does external fertilization provide for vertebrates despite requiring specific environmental conditions?

Which reproductive mode allows parents to produce many offspring simultaneously, spreading the risk of individual predation and increasing the chances of species survival?

Which developmental strategy reduces the burden of extensive parental care and allows the young to fend for themselves against predators early on?

What is the evolutionary advancement that enables reptiles, birds, and certain mammals to reproduce away from water bodies?

Which type of parental care involves activities like nest building, egg guarding, feeding, and teaching to increase the survival rates of the young?

What is the main advantage of ovovivipary as a reproductive mode compared to true vivipary?

What stimulates the initiation of sperm cell production in males?

Which hormone is responsible for regulating the stages of oogenesis in females?

During spermatogenesis, what is the role of the acrosome in a sperm cell?

In females, what happens to the three haploid cells that result from meiosis during oogenesis?

Which phase of the menstrual cycle involves the development of a mature Graafian follicle in the ovaries?

What is the primary function of the seminal vesicles in the male reproductive system?

Which male reproductive organ releases a mucus-like fluid to lubricate the urethra, facilitating sperm passage?

What is the role of the vas deferens in the male reproductive system?

Which part of the female reproductive system is responsible for housing and protecting the embryo and fetus during pregnancy?

What is the primary function of the Cowper’s Gland (Bulbourethral Gland) in the male reproductive system?

What triggers the release of an egg cell during ovulation in the menstrual cycle?

During fertilization, what is formed when the nuclei of the ovum and sperm cell fuse?

What is the main function of progesterone post-ovulation in the menstrual cycle?

Where does the blastocyst embed itself during implantation in the female reproductive system?

What initiates the formation of extra-embryonic membranes like the amnion and chorion during gestation?

What is the term for the process where an egg cell and a sperm cell fuse to form a zygote?

Which structure connects the embryo to the placenta during development?

What is the function of synapses in the nervous system?

Which system regulates involuntary bodily functions in the human nervous system?

What is the primary function of the placenta in fetal development?

What is the primary role of the autonomic nervous system (ANS)?

Which branch of the autonomic nervous system prepares the body for emergency situations?

What is the function of interneurons in the nervous system?

Which hormone is primarily associated with the 'fight or flight' response in stressful situations?

What is the main difference between motor neurons and interneurons?

Which part of the brain is responsible for coordinating all voluntary movements and maintaining balance?

What is the primary function of the Medulla Oblongata in the brain?

Which part of the nervous system controls involuntary muscles like the heartbeat and digestion?

What is the key role of Sensory (Afferent) Neurons in the nervous system?

What is the function of Motor (Efferent) Neurons in the nervous system?

What is a key advantage of internal fertilization in vertebrates?

Why does external fertilization require specific environmental conditions?

Which statement best describes the role of external fertilization in vertebrates?

What is a significant advantage of internal fertilization over external fertilization?

In terms of reproductive success, why might external fertilization be advantageous in certain environments?

Which reproductive mode involves animals giving birth to live young, providing nutrition and protection until birth?

What is the primary function of the amniotic egg during development?

Which type of species produce relatively mature and independent offspring shortly after birth?

What is the key aspect of parental care that varies widely among vertebrates?

Which evolutionary advancement has enabled reptiles, birds, and certain mammals to reproduce away from water bodies?

What stimulates the production of female gametes (ova) in the ovaries?

Which cells undergo meiosis to generate haploid sperm cells in males?

What is the primary function of the acrosome in a sperm cell during fertilization?

During spermatogenesis, what is the result of meiotic division of diploid germinal epithelial cells?

Which cells in the ovaries divide through mitosis to form multiple follicles during oogenesis?

Which female reproductive organ houses and protects the embryo and fetus during pregnancy?

What is the primary function of Cowper’s Gland (Bulbourethral Gland) in the male reproductive system?

Which male reproductive structure contains mitochondria providing energy required for movement?

What is the primary role of Seminal Vesicles in the male reproductive system?

Where are sperm cells primarily stored after being produced in the testes?

Which structure connects the embryo to the placenta in humans?

What is the function of villi in human embryo development?

At what stage of development does the zygote divide to form a morula and then a blastocyst?

What is the primary function of amniotic fluid during fetal development?

Which part of the human nervous system regulates involuntary bodily functions like digestion and heart rate?

What is the primary function of the autonomic nervous system?

Which part of the neuron carries impulses away from the cell body?

What does the parasympathetic nervous system do?

Which hormone plays a crucial role in preparing the body for 'fight or flight' situations?

What is the role of interneurons in the nervous system?

Which hormone stimulates the thickening of the endometrium in the uterus during the menstrual cycle?

What is the term used to describe the process where the blastocyst embeds itself into the endometrium?

Which hormone prevents menstruation and supports pregnancy if fertilization occurs?

During which phase of the menstrual cycle does the corpus luteum shrink if fertilization does not occur?

What triggers ovulation and the formation of the corpus luteum during the menstrual cycle?

What is the primary function of the Cerebellum in the brain?

Which part of the nervous system is responsible for transmitting impulses from sense organs to the spinal cord and brain?

What is the primary role of the Hypothalamus in the brain?

Which part of the central nervous system controls involuntary actions like heartbeat and breathing?

What is the main function of the Corpus Callosum in the brain?

What is the primary function of the interneuron in a reflex arc?

Which component of a reflex arc transports the impulse from the spinal cord to the effectors?

During a reflex action, which structure receives a stimulus and converts it into an impulse?

In a reflex arc, what is the function of the effector?

Which structure in a reflex arc transports the impulse from the receptor to the spinal cord?

What is the immediate response when a person touches a hot surface?

What component of a reflex arc carries impulses from receptors to effectors?

What is the key function of a receptor in a reflex arc?

Which structure in a reflex arc is located in the spinal cord and connects sensory and motor neurons?

During a reflex action, what is the role of an effector?

What is the role of the Eustachian tube in the human ear?

How are vibrations transmitted from the tympanic membrane to the inner ear in humans?

What is the function of the organ of Corti in the human ear?

How does the cochlear implant help individuals with deafness?

What is a common cause of middle ear infection in humans?

Which part of the inner ear detects changes in speed and direction of the body?

What structures are part of the bony labyrinth in the human inner ear?

How does the oval window contribute to hearing in humans?

What happens when the organ of Corti in the cochlea is stimulated?

What treatment option is available for deafness caused by hardening of ear tissues like ossicles?

What is the primary significance of a reflex action?

What is the role of synapses in the reflex arc?

In Alzheimer's disease, brain cell death leads to symptoms such as ___.

Which age group is typically affected by Multiple Sclerosis (MS)?

What is the primary function of effectors in the nervous system?

What is the main division of the human nervous system responsible for controlling involuntary actions?

Which part of a neuron receives signals from other neurons or receptors?

What do photoreceptors in the eye primarily detect?

'Reflex actions are rapid, automatic responses to stimuli, which involve a reflex arc passing through ___.' Complete this statement.

What is the role of the Choroid in the human eye?

How does the human eye adjust for near and distant objects during viewing?

What is the main function of the Optic Nerve in the human eye?

Which part of the human eye is responsible for controlling the amount of light entering?

What is the purpose of the Vitreous Humour in relation to light refraction?

Which part of the human ear is responsible for transmitting sound waves to the tympanic membrane?

What is the primary function of the pinna in the human ear?

In which part of the human ear does sound energy get converted into mechanical vibrations?

What is the role of the inner ear in the process of hearing?

Which structure in humans is responsible for converting light into electrical impulses that can be interpreted by the brain?

What is the primary function of the interneuron in a reflex arc?

Which component of the reflex arc is responsible for producing the response, such as muscles contracting to pull a finger away from a flame?

What is the first component of a reflex arc that receives a stimulus and converts it into an impulse?

Which structure in a reflex arc transports the impulse from the sensory neuron to the spinal cord?

What is the role of an effector in a reflex arc?

What structure carries the impulse from the spinal cord to the effectors in a reflex arc?

In a reflex arc, where does an impulse go after reaching an interneuron?

Which part of a reflex arc is responsible for carrying impulses from the receptor to the spinal cord?

What is the main function of a sensory neuron in a reflex arc?

What does an interneuron do in a reflex arc?

Why are synapses significant in the reflex arc?

What is the primary function of effectors in the nervous system?

In the human nervous system, which component is responsible for processing and interpreting sensory information?

What is the autoimmune disease characterized by attacks on the myelin sheath of neurons?

Which structure in a reflex arc carries the impulse from the receptor to the spinal cord?

What is a characteristic symptom of Alzheimer's disease?

Which part of the human ear responds to sound vibrations?

What is an example of a receptor that detects touch or pressure in the skin?

Which system controls involuntary actions in the body?

What is the primary role of neurons in the nervous system?

Which structure in the human eye contains light-sensitive cells responsible for transforming light into electrical impulses?

What is the function of the ciliary muscles in the human eye?

In bright light conditions, what happens to the pupil size controlled by the iris in the human eye?

Which part of the human ear is responsible for directing sound waves into the auditory canal?

What is the outer ear structure made of cartilage flaps responsible for directing sound waves?

Which part of the eye changes shape to focus light on near and distant objects?

What is the role of the optic nerve in the human eye?

How are sound waves directed into the auditory canal of the human ear?

What is the function of the vitreous humor in the human eye?

What is the area of clearest vision in the human eye with the highest concentration of cones?

What connects the middle ear to the throat and helps in equalizing pressure on both sides of the tympanic membrane?

What part of the human eye contains blood vessels and pigments that absorb light to prevent reflection?

Which part of the human ear is responsible for detecting changes in the head's position relative to gravity?

What structures contain sensory hair cells that convert sound into nerve impulses in the human ear?

What is the name of the fluid-filled cavity that contains the ossicles in the human ear?

What helps in balancing and detecting changes in the body's speed and direction within the human ear?

Which structure connects the middle ear to the inner ear in humans?