Human Anatomy and Physiology Quiz
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Questions and Answers

What is the primary function of Leydig cells in the human body?

  • Regulate thyroid hormones
  • Produce testosterone (correct)
  • Produce insulin
  • Produce adrenaline
  • What is the interval of the pacemaker signal from the SA node to the AV node?

  • 0.1 seconds (correct)
  • 0.5 seconds
  • 1 second
  • 0.3 seconds
  • What is the main role of the medulla oblongata?

  • Regulates heart rate, breathing, and blood pressure (correct)
  • Processes sensory information
  • Coordinates voluntary movements
  • Controls muscle contractions
  • What is the role of oxytocin in the human body?

    <p>Initiates labor pains</p> Signup and view all the answers

    Which structure directly detects deep pressure stimuli in the human body?

    <p>Pacinian corpuscles</p> Signup and view all the answers

    How does receptor-mediated modulation affect neurotransmitter actions?

    <p>It allows a neurotransmitter to have different effects based on receptor type</p> Signup and view all the answers

    What is the final destination of lymph in the circulatory system?

    <p>Subclavian vein</p> Signup and view all the answers

    What is the primary characteristic of the thyroid cartilage in males?

    <p>It is commonly known as Adam's Apple</p> Signup and view all the answers

    What is the primary function of creatine phosphate in muscle cells?

    <p>Regenerate ATP</p> Signup and view all the answers

    Which gland is generally larger in females than in males?

    <p>Pituitary gland</p> Signup and view all the answers

    Which hormone is primarily responsible for regulating the secretion of Follicle-Stimulating Hormone (FSH) and Luteinizing Hormone (LH) in females?

    <p>Gonadotropin-Releasing Hormone (GnRH)</p> Signup and view all the answers

    What does hypersecretion of growth hormone during adulthood lead to?

    <p>Acromegaly</p> Signup and view all the answers

    What initiates the contraction of striated muscle tissue?

    <p>Release of calcium ions</p> Signup and view all the answers

    Where are sperm stored until ejaculation?

    <p>Epididymis</p> Signup and view all the answers

    What is a characteristic of incomplete dominance?

    <p>Phenotypes of heterozygous individuals are intermediate</p> Signup and view all the answers

    What is the function of microglia in the nervous system?

    <p>Clean the synapse</p> Signup and view all the answers

    What is the primary characteristic of the heart in amphibians?

    <p>It is three-chambered.</p> Signup and view all the answers

    How does the circulatory system of mammals differ from that of reptiles?

    <p>Mammals have a complete separation of oxygenated and deoxygenated blood.</p> Signup and view all the answers

    What type of blood circulation system is found in Mollusca?

    <p>Open circulatory system with haemocoelic chambers.</p> Signup and view all the answers

    Which of the following best describes the blood of vertebrates?

    <p>It is red due to the presence of hemoglobin.</p> Signup and view all the answers

    Which group of animals is primarily endothermic?

    <p>Birds.</p> Signup and view all the answers

    What is the significant feature of the heart in birds?

    <p>It is four-chambered with a single aortic arch.</p> Signup and view all the answers

    Which example correctly represents the Class Chondrichthyes?

    <p>Shark.</p> Signup and view all the answers

    What is a characteristic of the excretory system in Platyhelminthes?

    <p>It consists of flame cells.</p> Signup and view all the answers

    What is the primary function of the sodium-potassium pump?

    <p>To maintain ion gradients across the cell membrane</p> Signup and view all the answers

    Which type of papillae are responsible for taste sensation on the tongue?

    <p>Foliate papillae</p> Signup and view all the answers

    What does the resting membrane potential of -70mV indicate about the cell?

    <p>The inside of the cell is negatively charged relative to the outside</p> Signup and view all the answers

    How many different types of neurotransmitters are known?

    <p>More than 100</p> Signup and view all the answers

    What physiological effect is primarily associated with the sympathetic division of the autonomic nervous system?

    <p>Prepping the body for 'fight or flight'</p> Signup and view all the answers

    What is the characteristic shape of filiform papillae?

    <p>Cone-shaped</p> Signup and view all the answers

    Which cranial nerve is primarily associated with the parasympathetic division?

    <p>Vagus nerve (CN-X)</p> Signup and view all the answers

    How much greater is the concentration of K^+ in the cell compared to outside?

    <p>30 times greater</p> Signup and view all the answers

    What is the diameter range of Mycoplasmas?

    <p>0.1 - 0.2 μm</p> Signup and view all the answers

    Which of the following capsomers is found in Herpes virus?

    <p>162</p> Signup and view all the answers

    Which of the following best describes a property of the bacterial flagellum?

    <p>It is non-contractile and lacks microtubules.</p> Signup and view all the answers

    What is the speed of blood in the capillaries?

    <p>0.26 cm/s</p> Signup and view all the answers

    Which cranial nerves are exclusively sensory?

    <p>I, II, VIII</p> Signup and view all the answers

    What is the length of the villi in the digestive tract?

    <p>0.5 - 1.5 mm</p> Signup and view all the answers

    What is the cross-sectional area of the aorta?

    <p>2.5 cm^2</p> Signup and view all the answers

    What are the most abundant lipids in living organisms?

    <p>Acylglycerol</p> Signup and view all the answers

    Which part of the hindbrain is primarily responsible for controlling involuntary actions such as heartbeat and breathing?

    <p>Medulla Oblongata</p> Signup and view all the answers

    What is the primary function of the limbic system?

    <p>Control of emotions and memory</p> Signup and view all the answers

    Which component is NOT part of the hindbrain?

    <p>Thalamus</p> Signup and view all the answers

    Which lobe of the cerebrum is primarily involved in processing visual information?

    <p>Occipital Lobe</p> Signup and view all the answers

    What does the hypothalamus primarily regulate?

    <p>Homeostasis</p> Signup and view all the answers

    Which structure acts as a bridge between different parts of the brain, specifically between the cerebrum, medulla, and cerebellum?

    <p>Pons</p> Signup and view all the answers

    Which part of the brain is specifically involved in regulating balance and fine motor skills?

    <p>Cerebellum</p> Signup and view all the answers

    What is the shape of the amygdala and where is it located?

    <p>Almond-shaped, on either side of the thalamus</p> Signup and view all the answers

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