Question 1

Which of the following best describes the primary function of the nervous system?

Accepted Answer

To transmit signals between different parts of the body and integrate information from the environment for appropriate responses.

Question 2

A patient presents with difficulty in maintaining balance and fine-tuning motor movements. Which part of the brain is most likely affected?

Accepted Answer

Cerebellum

Question 3

Which of the following cranial nerves is primarily responsible for the sense of smell?

Accepted Answer

Olfactory nerve

Question 4

The blood-brain barrier is mainly formed and maintained by which type of glial cell?

Accepted Answer

Astrocyte

Question 5

Which division of the nervous system is responsible for regulating involuntary actions such as heart rate and digestion?

Accepted Answer

Autonomic division of the PNS

Question 6

A lesion in the frontal lobe of the cerebrum would most likely affect which of the following functions?

Accepted Answer

Decision-making and personality

Question 7

Which of the following statements about cerebrospinal fluid (CSF) is correct?

Accepted Answer

CSF is a clear fluid produced by the choroid plexuses, providing mechanical and chemical protection to the brain and spinal cord.

Question 8

Which equation best represents the relationship between the number of spinal nerves and their regional distribution?

Accepted Answer

$$8 + 12 + 5 + 5 + 1 = 31$$

Question 9

A patient with damage to the medulla oblongata would most likely experience problems with which of the following?

Accepted Answer

Heart and lung function, swallowing, and vomiting

Question 10

Which of the following best describes the role of oligodendrocytes in the central nervous system?

Accepted Answer

They provide and maintain myelin sheaths around axons.

Question 11

Which lobe of the cerebrum is primarily responsible for processing sensory information related to touch and spatial relationships?

Accepted Answer

Parietal lobe

Question 12

Which of the following is NOT a function of the limbic system?

Accepted Answer

Regulating voluntary muscular movement

Question 13

Which of the following best explains the difference between afferent and efferent neurons in the spinal cord?

Accepted Answer

Afferent neurons carry sensory input toward the brain, while efferent neurons carry motor output from the brain to effector tissues.

Question 14

Which of the following glial cells is responsible for producing cerebrospinal fluid (CSF) in the CNS?

Accepted Answer

Ependymal cell

Question 15

A patient is unable to chew and has lost sensation in the face. Which cranial nerve is most likely damaged?

Accepted Answer

Trigeminal nerve

Question 16

Which of the following best describes the function of Schwann cells in the peripheral nervous system?

Accepted Answer

They provide myelination to axons and assist in regrowth after injury.

Question 17

Which of the following equations correctly represents the total number of cranial and spinal nerves in the human body?

Accepted Answer

$$12 + 31 = 43$$

Question 18

Which of the following is a correct statement about the meninges?

Accepted Answer

The arachnoid mater contains cerebrospinal fluid in the subarachnoid space.

Question 19

Which of the following neuron types is most commonly found in the CNS and is responsible for integrating sensory and motor information?

Accepted Answer

Multipolar neuron

The Nervous System: Structure, Function, and Components

Study Guide - Practice Questions