Question 1

Which of the following best describes the primary function of exteroceptors?

Accepted Answer

They detect changes in the external environment, such as touch, temperature, and pain.

Question 2

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

Accepted Answer

Nociceptors

Question 3

A patient is unable to sense limb position after a spinal cord injury. Which receptor type is most likely affected?

Accepted Answer

Proprioceptors

Question 4

Which of the following correctly matches the receptor with its stimulus?

Accepted Answer

Photoreceptors: Light

Question 5

What is the first step in sensory transduction at a sensory receptor?

Accepted Answer

A stimulus alters the membrane potential of the receptor cell.

Question 6

Which of the following best describes the pathway of a sensation from detection to perception?

Accepted Answer

Stimulus → Sensory receptor → Sensory neuron → CNS

Question 7

Which receptor type is primarily responsible for detecting changes in blood pH?

Accepted Answer

Chemoreceptors

Question 8

A person is exposed to bright light. Which receptor is activated and where is it located?

Accepted Answer

Photoreceptors in the retina

Question 9

Which of the following is a key difference between interoceptors and exteroceptors?

Accepted Answer

Interoceptors monitor internal body conditions, while exteroceptors detect external stimuli.

Question 10

Which of the following best explains how mechanoreceptors function?

Accepted Answer

They respond to mechanical forces such as pressure or stretch, generating a receptor potential.

Question 11

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

Accepted Answer

Thermoreceptors

Question 12

Which of the following is the correct sequence for sensory transduction?

Accepted Answer

Stimulus → Receptor potential → Action potential → CNS

Question 13

Which of the following scenarios best illustrates the function of proprioceptors?

Accepted Answer

A gymnast balancing on a beam senses the position of her limbs without looking at them.

Question 14

Which of the following is NOT a function of nociceptors?

Accepted Answer

Detecting changes in muscle length

Question 15

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

Accepted Answer

It detects stimuli and transmits sensory information to the CNS.

Module 13.4: Role of the Peripheral Nervous System (PNS) in Sensation

Study Guide - Practice Questions