Introduction to Neuroscience Quiz
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Questions and Answers

What is the function of the somatosensory system?

  • Carries information from the skin and muscles to the brain (correct)
  • Regulates smooth muscle, cardiac muscle, and glands
  • Connects the brain to skeletal muscles
  • Connects sensory organs to the brain
  • Which of the following structures is NOT part of the brainstem?

  • Cerebellum (correct)
  • Midbrain
  • Medulla
  • Pons
  • What is the primary function of the autonomic nervous system?

  • Regulating smooth muscle, cardiac muscle, and glands (correct)
  • Connecting the brain to sensory organs
  • Receiving sensory information from the environment
  • Controlling voluntary movement
  • Which of the following is NOT a special sensory system?

    <p>Somatic motor (C)</p> Signup and view all the answers

    What is the role of the thalamus in the nervous system?

    <p>Relaying sensory information to the cerebral cortex (C)</p> Signup and view all the answers

    Which of the following is a component of the forebrain?

    <p>Hypothalamus (D)</p> Signup and view all the answers

    What is the primary function of the spinal cord?

    <p>Relays information between the brain and the rest of the body (A)</p> Signup and view all the answers

    Which of the following systems carries information from the brain to skeletal muscles?

    <p>Somatic Motor System (B)</p> Signup and view all the answers

    Which of the following is NOT a function of the cerebellum?

    <p>Controlling heart rate (A)</p> Signup and view all the answers

    What is the role of the medulla in the nervous system?

    <p>Regulating breathing and heart rate (D)</p> Signup and view all the answers

    What is the function of the transverse gyri of Heschl, located within the temporal lobe?

    <p>Processing auditory information, specifically pitch and timbre. (C)</p> Signup and view all the answers

    Which of the following correctly describes the function of the Precentral Gyrus?

    <p>The primary motor cortex, responsible for initiating voluntary muscle movements. (A)</p> Signup and view all the answers

    Where is the Insula located in the brain?

    <p>Between the frontal and temporal lobes. (B)</p> Signup and view all the answers

    Which structure of the brain is responsible for the modulation of hypothalamic functions and regulation of emotional behavior?

    <p>The Limbic System. (D)</p> Signup and view all the answers

    The Basal Ganglia plays a crucial role in various functions. Which of the following is NOT a function of the Basal Ganglia?

    <p>Regulation of sleep-wake cycles. (A)</p> Signup and view all the answers

    What is the significance of the Homunculus in understanding the organization of the brain?

    <p>It highlights the proportional representation of different body parts in the sensory and motor cortices. (D)</p> Signup and view all the answers

    What is the primary function of the Cerebellum?

    <p>Coordinating and fine-tuning movements. (C)</p> Signup and view all the answers

    What is the role of the Superior Cerebellar Peduncle?

    <p>Connecting the cerebellum to the midbrain. (B)</p> Signup and view all the answers

    Which of the following is NOT a characteristic of the Cerebellum?

    <p>It plays a crucial role in regulating blood pressure and breathing. (D)</p> Signup and view all the answers

    Which of the following cranial nerves is responsible for smell?

    <p>Olfactory (CN I) (B)</p> Signup and view all the answers

    What is the name of the large fiber bundles that connect the cerebellum to the brainstem?

    <p>Cerebellar Peduncles (A)</p> Signup and view all the answers

    Which of the following is NOT a function of the Hypothalamus?

    <p>Initiating voluntary muscle movements. (B)</p> Signup and view all the answers

    Which condition is associated with dysfunction of the Basal Ganglia?

    <p>Parkinson's Disease (C)</p> Signup and view all the answers

    What is the characteristic white matter structure of the Cerebellum called?

    <p>Arbor Vitae (A)</p> Signup and view all the answers

    Which of the following is NOT a part of the Limbic System?

    <p>Caudate Nucleus (C)</p> Signup and view all the answers

    Which of the following terms describes the location of a structure that is towards the back of the body?

    <p>Posterior (C)</p> Signup and view all the answers

    Which of these is NOT a function of glial cells?

    <p>Transmitting electrical signals (A)</p> Signup and view all the answers

    What type of glial cell is responsible for forming myelin sheaths in the peripheral nervous system (PNS)?

    <p>Schwann cells (D)</p> Signup and view all the answers

    Which of the following terms describes a bundle of myelinated axons that travel together in the central nervous system (CNS)?

    <p>Tract (B)</p> Signup and view all the answers

    Which anatomical plane divides the body into left and right halves?

    <p>Sagittal (C)</p> Signup and view all the answers

    What type of neuron carries information from the central nervous system (CNS) to the periphery?

    <p>Efferent neuron (C)</p> Signup and view all the answers

    Which of the following structures is NOT part of the central nervous system (CNS)?

    <p>Cranial nerves (D)</p> Signup and view all the answers

    What type of matter is characterized by a high concentration of neuron cell bodies?

    <p>Gray matter (D)</p> Signup and view all the answers

    What term describes the location of a structure that is closer to the midline of the body?

    <p>Medial (B)</p> Signup and view all the answers

    Which of the following terms describes the location of a structure that is on the same side of the body?

    <p>Ipsilateral (C)</p> Signup and view all the answers

    What term describes the location of a structure that is farther away from the point of origin?

    <p>Distal (B)</p> Signup and view all the answers

    Which type of neuron is responsible for carrying information from the sensory receptors to the central nervous system (CNS)?

    <p>Afferent neuron (B)</p> Signup and view all the answers

    What structure is responsible for connecting the brain to the spinal cord?

    <p>Brain stem (D)</p> Signup and view all the answers

    What term describes the location of a structure that is below another structure?

    <p>Inferior (B)</p> Signup and view all the answers

    What type of cells make up the gray matter of the brain?

    <p>Neuron cell bodies (D)</p> Signup and view all the answers

    What is the function of the myelin sheath?

    <p>To increase the speed of electrical signal transmission (A)</p> Signup and view all the answers

    Which of the following is NOT a part of the brain discussed in the content?

    <p>Spinal Cord (D)</p> Signup and view all the answers

    Flashcards

    Cerebral Cortex

    The outer layer of the brain responsible for complex functions like consciousness and decision-making.

    Subcortical Structures

    Brain regions located beneath the cerebral cortex, involved in regulating emotions and motor functions.

    Brainstem

    The part of the brain connecting to the spinal cord, responsible for vital life functions like breathing and heart rate.

    Function of the Cerebral Cortex

    It's involved in processing sensory information and higher-level cognitive functions.

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    Role of the Brainstem

    Regulates autonomic functions such as heart rate, breathing, and sleep-wake cycles.

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    Cerebellum

    Part of the brain that coordinates movement.

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    Anatomical Planes

    Divisions of the body into sections for study.

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    Coronal Plane

    Divides the body into anterior and posterior sections.

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    Sagittal Plane

    Divides the body into left and right sections.

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    Neuron

    Fundamental unit of the nervous system.

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    Afferent Neurons

    Nerve cells that send information to the CNS.

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    Efferent Neurons

    Nerve cells that transmit information from the CNS.

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    Interneurons

    Neurons that connect afferent and efferent neurons.

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    Glia

    Non-neuronal cells supporting neurons in the nervous system.

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    White Matter

    Composed of myelinated axons in the CNS.

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    Gray Matter

    Composed primarily of neuron cell bodies.

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    CNS

    Central nervous system, including the brain and spinal cord.

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    PNS

    Peripheral nervous system, includes cranial and spinal nerves.

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    Oligodendrocytes

    Glial cells that produce myelin in the CNS.

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    Schwann Cells

    Glial cells that form myelin in the PNS.

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    Somatosensory System

    System that transmits info from skin and muscles to the brain.

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    Somatic Motor System

    System that carries info from the brain to skeletal muscles.

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    Autonomic System

    System that manages involuntary muscle and gland functions.

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    Forebrain

    The front region of the brain; includes cerebral hemispheres and diencephalon.

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    Thalamus

    A part of the diencephalon that relays sensory info to the brain.

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    Hypothalamus

    Regulates homeostasis and connects to the endocrine system.

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    Midbrain

    Region of the brain responsible for vision and hearing processing.

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    Insula

    Region of the brain between the temporal and frontal lobes, involved in taste and pain processing.

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    Precentral Gyrus

    Part of the frontal lobe; primary motor cortex involved in voluntary movement control.

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    Somatotopic Organization

    Arrangement of neurons in the precentral gyrus that correspond to body parts.

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    Limbic System

    Set of structures involved in emotions, memory, and regulation of hypothalamic functions.

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    Basal Ganglia

    Group of nuclei in the brain linked to motor control and learning routines.

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    Cerebellar Peduncles

    Fiber bundles connecting the cerebellum to the brainstem, involved in communication.

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    Occipital Lobe

    Region at the back of the brain primarily responsible for visual processing.

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    Cranial Nerves

    Twelve pairs of nerves that emerge directly from the brain, serving various sensory and motor functions.

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    Transverse Gyri of Heschl

    Part of the temporal lobe involved in auditory processing.

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    Fornix

    C-shaped bundle of fibers in the brain involved in the limbic system's memory processing.

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    Hippocampus

    Structure within the temporal lobe crucial for forming and retrieving memories.

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    Dyskinesia

    Abnormal involuntary movements; often linked to basal ganglia dysfunction.

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    Study Notes

    Introduction to Neuroscience

    • Neuroscience is the study of the nervous system
    • It includes the brain, spinal cord, and peripheral nerves
    • The nervous system is divided structurally into the Central Nervous System (CNS) and the Peripheral Nervous System (PNS)

    Neuroanatomical Terms

    • Rostral: Towards the front
    • Dorsal: Towards the back
    • Caudal: Towards the tail
    • Ventral: Towards the belly
    • Medial: Towards the middle
    • Lateral: Towards the side
    • Anterior: Towards the front
    • Posterior: Towards the back
    • Superior: Above
    • Inferior: Below
    • Ipsilateral: On the same side
    • Contralateral: On opposite sides

    Anatomical Planes

    • Horizontal: A plane that divides the body into superior and inferior sections
    • Coronal (Frontal): A plane that divides the body into anterior and posterior sections
    • Sagittal: A plane that divides the body into right and left sections

    Neuron

    • The basic unit of the nervous system
    • Parts include: cell body, dendrites, axon, and terminal button(s)
    • Afferent Neurons: Send information to the central nervous system
    • Efferent Neurons: Send information from the central nervous system
    • Interneurons: Transmit information between neurons

    Glia

    • Non-neuronal cells in the nervous system
    • Provide support, nourishment, and protection to neurons
    • Oligodendrocytes: Create myelin sheaths in the central nervous system
    • Schwann cells: Create myelin sheaths in the peripheral nervous system

    White Matter vs Gray Matter

    • White matter: Contains axons and myelin, high fat content
    • Gray matter: Contains cell bodies of neurons
    • White matter connects different gray matter structures

    CNS and PNS

    • Central Nervous System (CNS): Includes the brain and spinal cord
    • Peripheral Nervous System (PNS): Includes the cranial nerves and spinal nerves
      • Somatic Nervous System: Controls voluntary muscle movements
      • Autonomic Nervous System: Controls involuntary muscle movements, organs, glands
      • Special Sensory System: Carries sensory information from specialized sensory receptors

    CNS: Brain Structure and Function

    • Brainstem: Contains the midbrain, pons, and medulla oblongata and helps regulated basic life functions.
    • Diencephalon: Contains the thalamus and hypothalamus which relay sensory input. Hypothalamus is involved in hormonal regulation, appetite, body temperature.
    • Forebrain: Contains the cerebral hemispheres

    Cerebral Cortex

    • Lobes: Frontal, parietal, temporal, occipital lobes
    • Subdivided into sulcus, sulci, gyrus, and gyri

    Spinal Cord

    • Part of the CNS that connects the brain to the peripheral nervous system
    • Divided into segments that correspond to specific regions of the body
    • Contains sensory and motor pathways

    Cranial Nerves

    • Twelve pairs of nerves that connect the brain to the head and neck, some carry sensory info, some are motor
    • Numbers I-XII

    Basal Ganglia

    • Important for motor control, coordinating movements
    • Structures include: caudate nucleus, putamen, globus pallidus, subthalamus, substantia nigra

    Cerebellum

    • Located behind the brainstem
    • Coordinates and refines movement
    • Important for balance and posture
    • Contains the Arbor Vitae

    Diencephalon

    • Contains thalamus and hypothalamus
    • Thalamus relays sensory information and processes it
    • Hypothalamus regulates hormones, metabolism, body temperature

    Limbic System

    • Network of structures involved in emotion, motivation, and memory
    • Includes amygdala, hippocampus, hypothalamus and other areas

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