Question 1

Which of the following is NOT a main function of the nervous system?

Accepted Answer

Production of body heat

Question 2

A patient presents with a central nervous system infection. Which neuroglia would be most active in engulfing pathogens?

Accepted Answer

Microglia

Question 3

The efferent division of the nervous system carries motor commands from the CNS to muscles and glands. These muscles and glands are collectively called:

Accepted Answer

Effectors

Question 4

Which type of neuron is characterized by having one dendrite and one axon with the cell body located between them?

Accepted Answer

Bipolar neuron

Question 5

Which of the following are ALL required to generate an action potential (nerve impulse)?

Accepted Answer

All of the above

Question 6

A brain MRI shows a lesion in the cortex and nuclei. Which type of brain matter is affected?

Accepted Answer

Gray matter

Question 7

Which of the following is NOT correctly matched regarding brain ventricles and their locations?

Accepted Answer

Cerebral aqueduct – spinal cord

Question 8

A patient receives an epidural injection for pain relief during childbirth. This space is unique to the spinal cord and not found around the brain. Which statement best explains this anatomical difference?

Accepted Answer

There is an additional space around the spinal cord called the epidural space.

Question 9

Which of the following is characteristic of the sympathetic division of the autonomic nervous system?

Accepted Answer

Preganglionic nerve fibers are short.

Question 10

Which of the following would NOT be consistent with a predominance of sympathetic activity in an organ?

Accepted Answer

Contraction of the bladder

Question 11

A patient is unable to generate action potentials due to a genetic mutation affecting voltage-gated sodium channels. Which step in the action potential process is most directly impaired?

Accepted Answer

Opening of voltage-gated ion channels

Question 12

Which of the following best describes the location of gray matter in the brain?

Accepted Answer

It is found in both the cortex and nuclei.

Question 13

A researcher is studying the flow of cerebrospinal fluid (CSF) through the brain. Which structure does NOT match its associated location?

Accepted Answer

Cerebral aqueduct – spinal cord

Question 14

Which of the following best explains why the sympathetic division is called the 'thoracolumbar division'?

Accepted Answer

Its preganglionic neurons originate in the thoracic and lumbar regions of the spinal cord.

Question 15

A person is exposed to a stressful situation, triggering the 'fight or flight' response. Which of the following physiological changes is LEAST likely to occur?

Accepted Answer

Contraction of the bladder

Question 16

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

Accepted Answer

Engulfing cellular waste and pathogens

Question 17

A patient with a spinal cord injury loses sensation below the injury site but retains motor function. Which division of the nervous system is most likely affected?

Accepted Answer

Afferent division

Question 18

Which of the following is a distinguishing feature of the meninges surrounding the spinal cord compared to those around the brain?

Accepted Answer

Presence of an epidural space

Question 19

Which of the following best describes the pathway of a motor command from the CNS to a skeletal muscle?

Accepted Answer

Efferent division to effectors

Question 20

A neuron is classified as multipolar. Which of the following best describes its structure?

Accepted Answer

Multiple dendrites and one axon

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