Question 1

Which division of the peripheral nervous system (PNS) is responsible for involuntary control of smooth muscle, cardiac muscle, and glands?

Accepted Answer

Autonomic nervous system (ANS)

Question 2

Which type of sensory receptor is primarily responsible for detecting changes in blood pressure?

Accepted Answer

Baroreceptors

Question 3

A patient presents with loss of discriminative touch in the fingertips. Which receptor type is most likely damaged?

Accepted Answer

Tactile (Meissner's) corpuscles

Question 4

Which of the following best describes proprioceptors?

Accepted Answer

They monitor stretch in locomotory organs and send inputs on body movement to the CNS.

Question 5

Which of the following is TRUE regarding encapsulated nerve endings?

Accepted Answer

They consist of one or more end fibers of sensory neurons enclosed in connective tissue.

Question 6

A person is unable to sense vibration in their skin. Which receptor is most likely impaired?

Accepted Answer

Lamellar (Pacinian) corpuscles

Question 7

Which of the following is a function of exteroceptors?

Accepted Answer

Detecting stimuli from outside the body, such as touch and temperature

Question 8

Which of the following structures is a cluster of peripheral neuronal cell bodies?

Accepted Answer

Ganglion

Question 9

Which receptor type is most likely to be activated when you touch a hot surface?

Accepted Answer

Thermoreceptors

Question 10

Which of the following best describes the function of motor endings in the PNS?

Accepted Answer

They innervate effectors such as muscles and glands.

Question 11

Which of the following is a rapidly-adapting receptor for light touch found in sensitive, hairless areas of the skin?

Accepted Answer

Tactile (Meissner's) corpuscles

Question 12

Which of the following is NOT a function of visceral sensory receptors?

Accepted Answer

Monitoring stretch in skeletal muscles

Question 13

Which of the following is TRUE about free nerve endings?

Accepted Answer

They are abundant in epithelia and underlying connective tissue and respond to pain and temperature.

Question 14

A patient has difficulty sensing continuous pressure on their skin. Which receptor is most likely affected?

Accepted Answer

Bulbous corpuscles (Ruffini endings)

Question 15

Which of the following equations best represents the relationship between stimulus intensity ($$I) $$and receptor potential ($$V) in a $$sensory neuron, assuming a linear response?

Accepted Answer

$$V = kI$$

Question 16

Which of the following is a correct pairing of receptor type and stimulus detected?

Accepted Answer

Nociceptors — respond to harmful stimuli that result in pain

Question 17

Which of the following best describes the role of ganglia in the PNS?

Accepted Answer

They are clusters of peripheral neuronal cell bodies.

Question 18

Which of the following is a slowly-adapting receptor for continuous pressure located in the dermis?

Accepted Answer

Bulbous corpuscles (Ruffini endings)

Question 19

Which of the following is a function of the somatic sensory division of the PNS?

Accepted Answer

General: touch, pain, pressure, vibration, temperature, and proprioception in skin, body wall, and limbs

Question 20

Which of the following best explains why tactile (Meissner's) corpuscles are found in sensitive, hairless areas of the skin?

Accepted Answer

They are rapidly-adapting receptors specialized for discriminative touch.

Peripheral Nervous System: Organization and Sensory Receptors

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