Q: Which equation best represents the relationship between stimulus localization and receptive field size?

$$\text{Localization accuracy} \propto \frac{1}{\text{Receptive field size}}$$

Question 1

Which of the following best describes the concept of 'labeled line' in sensory pathways?

Accepted Answer

It is the anatomical link between a peripheral receptor and a cortical neuron that allows the CNS to interpret the modality of a stimulus.

Question 2

A patient reports feeling pain in their left arm during a heart attack. This phenomenon is best explained by which concept?

Accepted Answer

Referred pain

Question 3

Which type of sensory receptor is most likely to undergo rapid adaptation to a continuous stimulus?

Accepted Answer

Phasic receptor

Question 4

Why is it more difficult to localize a stimulus in an area with a large receptive field?

Accepted Answer

Because the area monitored by a single sensory neuron is larger, reducing spatial resolution.

Question 5

Which of the following is NOT a general sense detected by general sensory receptors?

Accepted Answer

Taste

Question 6

A tactile receptor that is encapsulated and detects deep pressure and high-frequency vibration is called:

Accepted Answer

Lamellated (Pacinian) corpuscle

Question 7

Which equation best represents the relationship between stimulus localization and receptive field size?

Accepted Answer

$$	ext{Localization accuracy} \propto \frac{1}{	ext{Receptive field size}}$$

Question 8

Which sensory receptor type is responsible for monitoring the position of joints and muscles?

Accepted Answer

Proprioceptors

Question 9

Endorphins reduce the conscious perception of pain by:

Accepted Answer

Binding to presynaptic membranes and preventing the release of substance P.

Question 10

Which of the following statements about tonic receptors is TRUE?

Accepted Answer

They show little peripheral adaptation and are always active.

Question 11

During a sensory test, a patient is unable to distinguish two points of contact on their back, but can easily do so on their fingertip. This is because:

Accepted Answer

The fingertip has smaller receptive fields, allowing for greater spatial resolution.

Question 12

Which of the following is a correct classification for mechanoreceptors?

Accepted Answer

They provide the sensations of touch, pressure, and vibration.

Question 13

Phantom pain is best described as:

Accepted Answer

Pain sensations perceived from an amputated limb due to stimulation of the remaining sensory pathway.

Question 14

Which encapsulated tactile receptor is most important for discriminative touch and texture recognition?

Accepted Answer

Tactile (Meissner) corpuscle

Question 15

Which of the following is TRUE regarding nociceptors?

Accepted Answer

They are free nerve endings with large receptive fields and show little adaptation.

Question 16

A patient with kidney stones reports pain in the inferior abdomen. This is an example of:

Accepted Answer

Referred pain

Question 17

Which of the following best explains why organ pain is often felt in the skin?

Accepted Answer

Somatic and visceral sensory neurons send signals via the same ascending tracts within the spinal cord.

Question 18

Which of the following tactile receptors is most likely to detect hair displacement?

Accepted Answer

Root hair plexus

Question 19

Which of the following is a function of chemoreceptors?

Accepted Answer

Responding to water-soluble and lipid-soluble substances dissolved in body fluids

Question 20

Which of the following statements about sensory perception is correct?

Accepted Answer

Only about 1% of sensory information reaches the cerebral cortex for conscious awareness.

The General Senses and Sensory Receptors: Structure, Function, and Clinical Relevance

Study Guide - Practice Questions

Study Guide - Flashcards