Question 1

Which lobe of the brain is primarily responsible for processing visual information, and what would likely result from damage to this area?

Accepted Answer

Occipital lobe; resulting in visual disturbances or blindness

Question 2

A patient presents with facial drooping and inability to close one eye. Which cranial nerve is most likely affected, and what is the name of this condition?

Accepted Answer

Cranial Nerve VII (Facial); Bell’s palsy

Question 3

Which of the following best describes the difference between sensation and perception?

Accepted Answer

Sensation is the detection of stimuli by receptors, while perception is the conscious interpretation of those stimuli by the brain.

Question 4

Which type of receptor is primarily responsible for detecting changes in blood pH, and where are these receptors typically located?

Accepted Answer

Chemoreceptors; located in the carotid and aortic bodies

Question 5

Which of the following best explains why spinal cord neurons cannot regenerate after injury, while peripheral nerve fibers can?

Accepted Answer

Peripheral nerves have Schwann cells that form regeneration tubes, while the CNS lacks these and has inhibitory factors.

Question 6

A patient is unable to move their right eye laterally, resulting in double vision (diplopia). Which cranial nerve is most likely damaged?

Accepted Answer

Cranial Nerve VI (Abducens)

Question 7

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

Accepted Answer

They provide a protective covering for the brain and spinal cord.

Question 8

Which brain wave pattern is most commonly associated with deep sleep, and what is its typical frequency range?

Accepted Answer

Delta waves; 0.5–4 Hz

Question 9

Which of the following is the correct sequence of events in a typical reflex arc?

Accepted Answer

Receptor → Sensory neuron → Integration center → Motor neuron → Effector

Question 10

Which type of sensory receptor adapts rapidly to a constant stimulus, and what is an example of such a receptor?

Accepted Answer

Phasic receptors; Meissner’s corpuscles

Question 11

A patient is unable to shrug their shoulders or turn their head against resistance. Which cranial nerve is most likely affected, and how would you test it?

Accepted Answer

Cranial Nerve XI (Accessory); ask the patient to shrug shoulders and turn head against resistance

Question 12

Which of the following best describes the function of the brain’s ventricles?

Accepted Answer

They produce and circulate cerebrospinal fluid (CSF).

Question 13

Which cranial nerve is responsible for the sense of smell, and how is it tested clinically?

Accepted Answer

Cranial Nerve I (Olfactory); by presenting familiar scents to each nostril

Question 14

Which of the following best describes the classification of a nerve that carries both sensory and motor fibers?

Accepted Answer

Mixed nerve

Question 15

A patient presents with involuntary, rapid eye movements. What is the term for this condition, and which cranial nerve is most likely involved?

Accepted Answer

Nystagmus; Cranial Nerve VIII (Vestibulocochlear)

Question 16

Which of the following best describes pattern recognition as an aspect of sensory perception?

Accepted Answer

The ability to identify a familiar face among a crowd

Question 17

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

Accepted Answer

Dura mater → Arachnoid mater → Pia mater

Question 18

Which of the following best describes the function of exteroceptors?

Accepted Answer

They detect external stimuli, such as touch, temperature, and pain.

Question 19

During the patellar reflex, which muscle contracts in response to the tap on the patellar tendon, and what is the purpose of this reflex?

Accepted Answer

Quadriceps femoris; to prevent overstretching of the muscle

Question 20

Which of the following steps is NOT part of the regeneration of a peripheral nerve fiber after injury?

Accepted Answer

Oligodendrocytes form a myelin sheath to guide regrowth

Study Guide for CNS and PNS Exam – Key Concepts and Guidance

Study Guide - Practice Questions

Study Guide - Flashcards