Question 1

Which of the following receptors is primarily responsible for detecting changes in blood pressure within arteries?

Accepted Answer

Baroreceptors

Question 2

A patient is unable to feel pain in their hand after a nerve injury. Which type of sensory receptor is most likely damaged?

Accepted Answer

Nociceptors

Question 3

Which of the following best describes the function of Merkel's discs?

Accepted Answer

Detecting light touch and texture

Question 4

Which equation correctly represents the relationship between stimulus intensity ($$I) $$and receptor potential ($$V) in a $$sensory neuron?

Accepted Answer

$$V = k 	imes I$$

Question 5

A patient presents with loss of proprioception. Which receptor is most likely affected?

Accepted Answer

Muscle spindles

Question 6

Which of the following is NOT a function of the dorsal column-medial lemniscal pathway?

Accepted Answer

Transmitting pain and temperature

Question 7

Which structure in the spinal cord is responsible for relaying pain and temperature information to the brain?

Accepted Answer

Spinothalamic tract

Question 8

If a person cannot distinguish between two points touched closely together on their skin, which sensory concept is most likely impaired?

Accepted Answer

Receptive field size

Question 9

Which of the following best describes the function of the Golgi tendon organ?

Accepted Answer

Monitors tension in tendons

Question 10

A patient has difficulty sensing vibration in their feet. Which receptor is most likely dysfunctional?

Accepted Answer

Pacinian corpuscles

Question 11

Which of the following equations best represents the calculation of conduction velocity ($$v) in a $$myelinated axon, given axon diameter ($$d) $$and myelination factor ($$m$$)?

Accepted Answer

$$v = m 	imes \sqrt{d}$$

Question 12

Which of the following is a correct example of a general reflex arc?

Accepted Answer

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

Question 13

Which of the following best describes the function of Meissner's corpuscles?

Accepted Answer

Detecting light touch and low-frequency vibration

Question 14

A patient has a lesion in the spinothalamic tract. Which sensation is most likely to be affected?

Accepted Answer

Pain

Question 15

Which of the following is a function of Ruffini endings?

Accepted Answer

Detecting skin stretch

Question 16

Which equation best represents the calculation of the total number of sensory neurons ($$N) in a $$given area, given the area ($$A) $$and neuron density ($$\rho$$)?

Accepted Answer

$$N = A 	imes ho$$

Question 17

Which of the following is a major difference between the dorsal column-medial lemniscal pathway and the spinothalamic tract?

Accepted Answer

The dorsal column pathway transmits fine touch and proprioception, while the spinothalamic tract transmits pain and temperature.

Question 18

Which of the following best describes the adaptation rate of Pacinian corpuscles?

Accepted Answer

Rapidly adapting

Question 19

A patient is unable to sense muscle stretch during movement. Which receptor is most likely impaired?

Accepted Answer

Muscle spindle

Question 20

Which of the following best describes the function of chemoreceptors?

Accepted Answer

Detecting chemical changes in the environment

Chapter 13: The Peripheral Nervous System and Reflex Activity – Study Guide

Study Guide - Practice Questions

Study Guide - Flashcards