Question 1

Which of the following best describes the sequence of events in a typical somatic reflex arc?

Accepted Answer

Sensory receptor → Afferent pathway → Control center → Efferent pathway → Effector organ

Question 2

A patient suffers a stroke that damages the left frontal lobe, specifically Broca's area. Which of the following symptoms is most likely to result?

Accepted Answer

Difficulty producing speech but comprehension remains intact

Question 3

Which of the following statements correctly differentiates between a nucleus and a ganglion in the nervous system?

Accepted Answer

A nucleus is a cluster of neuron cell bodies in the central nervous system, while a ganglion is a cluster of neuron cell bodies in the peripheral nervous system.

Question 4

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

Accepted Answer

Acts as a relay station for sensory information to the cerebral cortex

Question 5

A patient presents with loss of fine touch and proprioception below the level of a spinal cord injury. Which spinal cord tract is most likely damaged?

Accepted Answer

Posterior (dorsal) column tract

Question 6

Which of the following cranial nerves is correctly matched with its primary function?

Accepted Answer

CN V (Trigeminal): Sensation from the face and motor control of mastication

Question 7

Which of the following best describes the difference between the sympathetic and parasympathetic divisions of the autonomic nervous system?

Accepted Answer

Sympathetic division has ganglia close to the spinal cord and prepares the body for 'fight or flight', while parasympathetic has ganglia near or within target organs and promotes 'rest and digest'.

Question 8

Which of the following is a function of the blood-brain barrier (BBB)?

Accepted Answer

Regulates the passage of certain substances from the blood into the brain, protecting neural tissue from toxins and pathogens

Question 9

Which of the following best describes the process of phototransduction in the retina?

Accepted Answer

Light activates photoreceptors, causing a change in membrane potential that leads to the generation of action potentials in the optic nerve

Question 10

A patient with multiple sclerosis (MS) experiences muscle weakness and slowed reflexes. Which of the following best explains these symptoms?

Accepted Answer

Demyelination of CNS axons impairs the speed and efficiency of action potential conduction

Question 11

Which of the following is TRUE regarding the arrangement of gray and white matter in the spinal cord?

Accepted Answer

Gray matter forms an H-shaped core in the center, surrounded by white matter

Question 12

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

Accepted Answer

Coordinates and fine-tunes voluntary movements and maintains posture and balance

Question 13

Which of the following is a correct pairing of a sensory receptor type with the stimulus it detects?

Accepted Answer

Baroreceptor: Detects changes in pressure

Question 14

Which of the following structures is responsible for the majority of light refraction as it enters the eye?

Accepted Answer

Cornea

Question 15

Which neurotransmitter is released by preganglionic neurons in both the sympathetic and parasympathetic divisions of the autonomic nervous system?

Accepted Answer

Acetylcholine

Question 16

Which of the following best describes the difference between a nerve and a tract?

Accepted Answer

A nerve is a bundle of axons in the peripheral nervous system, while a tract is a bundle of axons in the central nervous system.

Question 17

Which of the following best explains why damage to the Wernicke area results in a specific type of aphasia?

Accepted Answer

It impairs the ability to comprehend language, resulting in fluent but nonsensical speech.

Question 18

Which of the following is the correct order of the layers of the meninges from superficial to deep?

Accepted Answer

Dura mater → Arachnoid mater → Pia mater

Question 19

Which of the following best describes the function of the superior colliculi in the midbrain?

Accepted Answer

Coordinate visual reflexes and tracking movements

Question 20

A person is unable to distinguish between red and green colors. Which part of the eye is most likely affected?

Accepted Answer

Cones in the retina

Module 5

Study Guide - Practice Questions

Study Guide - Flashcards