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

A patient is unable to feel pain or temperature changes on their skin. Which type of sensory receptor is most likely damaged?

Accepted Answer

Free nerve endings of sensory neurons

Question 3

Which of the following best describes the function of proprioceptors?

Accepted Answer

Monitor degree of stretch in muscles, tendons, and joints

Question 4

Which type of encapsulated nerve ending is found in the dermal papillae and is responsible for discriminative touch in sensitive, hairless areas of the skin?

Accepted Answer

Tactile (Meissner's) corpuscles

Question 5

Which of the following correctly matches the receptor type with the stimulus it detects?

Accepted Answer

Photoreceptors: light

Question 6

A person is experiencing continuous pressure on their skin, such as from a tight watchband. Which receptor is most likely responsible for detecting this stimulus?

Accepted Answer

Bulbous corpuscles (Ruffini endings)

Question 7

Which of the following is TRUE regarding the organization of nerves and ganglia in the PNS?

Accepted Answer

Nerves are bundles of peripheral axons, and ganglia are clusters of neuronal cell bodies

Question 8

Which receptor type would be most active when monitoring blood pressure in arteries?

Accepted Answer

Baroreceptors (a type of mechanoreceptor)

Question 9

A patient presents with loss of discriminative touch but retains sensitivity to pain and temperature. Which receptor type is most likely damaged?

Accepted Answer

Tactile (Meissner's) corpuscles

Question 10

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 11

Which of the following is a correct example of an exteroceptor?

Accepted Answer

Receptors in the skin detecting touch

Question 12

A rapid vibration stimulus is applied to the skin. Which receptor is most likely to respond?

Accepted Answer

Lamellar (Pacinian) corpuscles

Question 13

Which of the following best describes the adaptation rate of tactile (Meissner's) corpuscles?

Accepted Answer

Rapidly-adapting

Question 14

Which structure is responsible for innervating effectors such as muscles and glands in the PNS?

Accepted Answer

Motor endings (axon boutons of motor neurons)

Question 15

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

Accepted Answer

Responding to light in the eye

Question 16

A person is unable to detect changes in temperature. Which receptor type is most likely impaired?

Accepted Answer

Thermoreceptors

Question 17

Which of the following best describes the location and function of proprioceptors?

Accepted Answer

Located in muscles, tendons, joints, and ligaments; monitor degree of stretch and body movement

Question 18

Which of the following is a correct statement about encapsulated nerve endings?

Accepted Answer

They consist of sensory neuron end fibers enclosed in connective tissue

Question 19

A patient has lost the ability to sense stretch in their muscles and joints, but can still feel touch and pain. Which receptor type is most likely affected?

Accepted Answer

Proprioceptors

Question 20

Which of the following best describes the difference between general and special sensory receptors?

Accepted Answer

General sensory receptors monitor touch, pressure, vibration, stretch, pain, temperature, and proprioception; special sensory receptors monitor senses like vision, hearing, taste, and smell

Peripheral Nervous System: Organization and Sensory Receptors

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