Question 1

Which of the following best describes the function of the dorsal column medial lemniscus pathway?

Accepted Answer

Transmits fine touch and proprioception from the body to the cerebral cortex.

Question 2

A patient presents with loss of pain and temperature sensation on the right side of the body below the level of T10. Which spinal tract is most likely damaged?

Accepted Answer

Left spinothalamic tract

Question 3

Which of the following cranial nerves is responsible for taste from the anterior 2/3 of the tongue and facial expression?

Accepted Answer

Facial (VII)

Question 4

During a simple stretch reflex, such as the patellar tendon (knee jerk) reflex, which of the following is the correct sequence of events?

Accepted Answer

Muscle spindle detects stretch, afferent neuron synapses in spinal cord, efferent neuron stimulates muscle contraction.

Question 5

Which equation correctly represents the relationship between the number of spinal nerves and vertebral regions?

Accepted Answer

$$N_{spinal} = C + T + L + S + Co$$

Question 6

Which of the following is TRUE regarding the organization of the sensory homunculus?

Accepted Answer

The size of a region on the homunculus is proportional to the precision of sensory input.

Question 7

Which of the following best describes the role of the basal ganglia in voluntary movement?

Accepted Answer

Initiates and regulates voluntary movement, helping to start and stop actions.

Question 8

A patient has difficulty swallowing and loss of taste from the posterior 1/3 of the tongue. Which cranial nerve is most likely affected?

Accepted Answer

Glossopharyngeal (IX)

Question 9

Which of the following statements about the autonomic nervous system is correct?

Accepted Answer

Parasympathetic division uses acetylcholine at both preganglionic and postganglionic synapses.

Question 10

Which of the following is NOT a component of a typical reflex arc?

Accepted Answer

Cerebral cortex

Question 11

Which pathway is responsible for carrying pain and temperature signals from the periphery to the brain?

Accepted Answer

Spinothalamic tract

Question 12

Which of the following best explains the effect of sympathetic stimulation on cardiac muscle?

Accepted Answer

Raises both rate and force of contraction, increasing blood delivery to tissues

Question 13

Which cranial nerve is responsible for innervating the muscles of mastication and carrying sensory information from the face?

Accepted Answer

Trigeminal (V)

Question 14

Which of the following equations correctly represents the number of cervical spinal nerves?

Accepted Answer

$$N_{cervical} = 8$$

Question 15

Which of the following is a correct description of the withdrawal reflex?

Accepted Answer

It involves rapid conduction of pain afferents and results in removal of a limb from painful stimulus.

Question 16

Which of the following best describes the function of the corticospinal tract?

Accepted Answer

Transmits voluntary motor commands from the cortex to the spinal cord.

Question 17

Which of the following is TRUE regarding the parasympathetic division of the autonomic nervous system?

Accepted Answer

Postganglionic neurons release acetylcholine.

Question 18

Which of the following cranial nerves is purely motor and innervates muscles that move the head and neck?

Accepted Answer

Accessory (XI)

Question 19

Which of the following best describes the function of the cerebellum?

Accepted Answer

Coordinates balance, posture, and timing of movement.

Question 20

A patient has lost the ability to contract the diaphragm and breathe independently. Which spinal nerves are most likely damaged?

Accepted Answer

Cervical spinal nerves (C3-C5)

Comprehensive Study Notes: The Nervous System, Spinal Cord, Cranial Nerves, Reflexes, and Autonomic Nervous System

Study Guide - Practice Questions

Study Guide - Flashcards