Question 1

Which of the following best describes the function of mechanoreceptors?

Accepted Answer

They respond to touch, pressure, vibration, and stretch.

Question 2

A patient presents with pain in the left arm during a heart attack. This is an example of which phenomenon?

Accepted Answer

Referred pain

Question 3

Which connective tissue layer directly surrounds individual axons within a nerve?

Accepted Answer

Endoneurium

Question 4

Which type of sensory receptor is primarily responsible for detecting muscle stretch and length?

Accepted Answer

Muscle spindle

Question 5

What is the main difference between a generator potential and a receptor potential?

Accepted Answer

Generator potentials occur in general sensory receptors, while receptor potentials occur in special sense organs.

Question 6

Which of the following is TRUE regarding adaptation in sensory receptors?

Accepted Answer

Receptors for pressure, touch, and smell are fast-adapting.

Question 7

A nerve that contains both sensory and motor fibers is classified as:

Accepted Answer

Mixed nerve

Question 8

Which of the following best explains why CNS axons do not regenerate as readily as PNS axons?

Accepted Answer

CNS oligodendrocytes produce growth-inhibiting proteins and astrocytes form scar tissue.

Question 9

Which of the following is a function of the dorsal root ganglion?

Accepted Answer

It contains cell bodies of sensory neurons.

Question 10

Which of the following best describes the process of Wallerian degeneration?

Accepted Answer

The axon and myelin sheath distal to the injury degenerate.

Question 11

Which receptor is most likely to be activated by capsaicin, the chemical found in hot peppers?

Accepted Answer

Nociceptor (vanilloid receptor)

Question 12

A patient with a severed peripheral nerve undergoes successful regeneration. Which of the following steps is NOT part of the regeneration process?

Accepted Answer

Oligodendrocytes form a regeneration tube.

Question 13

Which of the following is an example of a rapidly adapting receptor?

Accepted Answer

Tactile (Meissner's) corpuscle

Question 14

Which aspect of sensory perception allows you to distinguish between a light touch and a firm pressure?

Accepted Answer

Magnitude estimation

Question 15

Which of the following best describes the role of Schwann cells in peripheral nerve regeneration?

Accepted Answer

They release growth factors and form a regeneration tube to guide axon sprouts.

Question 16

Which of the following is a function of proprioceptors?

Accepted Answer

Informing the brain of body position and movement

Question 17

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

Accepted Answer

It bundles nerve fibers into fascicles.

Question 18

Which of the following is TRUE regarding pain tolerance?

Accepted Answer

All people perceive pain at the same stimulus intensity, but tolerance varies.

Question 19

Which of the following is a correct sequence for the levels of neural integration in the somatosensory system?

Accepted Answer

Receptor level → Circuit level → Perceptual level

Question 20

A patient experiences phantom limb pain after amputation. Which receptor type is most likely involved in the amplification of this pain?

Accepted Answer

NMDA receptors in the spinal cord

Ch.13 A notes

Study Guide - Practice Questions