Question 1

Which of the following best describes the process of sensory transduction?

Accepted Answer

The conversion of a physical or chemical stimulus into a change in membrane potential in a sensory receptor cell.

Question 2

A patient is unable to localize a light touch stimulus on their back. Which property of sensory receptors most likely explains this phenomenon?

Accepted Answer

Large receptive fields in the skin of the back reduce the ability to localize stimuli.

Question 3

Which of the following is TRUE regarding receptor potentials?

Accepted Answer

They vary in intensity depending on the strength of the stimulus.

Question 4

A person enters a room with a strong odor, but after a few minutes, they no longer notice the smell. This is an example of:

Accepted Answer

Central adaptation

Question 5

Which type of sensory receptor is responsible for detecting changes in blood pressure within the carotid sinus?

Accepted Answer

Baroreceptors

Question 6

A person touches a hot stove and immediately withdraws their hand. Which type of nerve fiber is primarily responsible for the initial sharp pain?

Accepted Answer

Myelinated type A fibers

Question 7

Which of the following best explains why you stop noticing the feeling of your clothes after wearing them for a while?

Accepted Answer

Peripheral adaptation of tactile receptors

Question 8

Which of the following is a function of chemoreceptors located in the carotid bodies?

Accepted Answer

Monitoring pH, carbon dioxide, and oxygen levels in the blood

Question 9

Which tactile receptor is most sensitive to deep pressure and high-frequency vibration, and adapts rapidly?

Accepted Answer

Lamellar (Pacinian) corpuscle

Question 10

A patient with damage to their proprioceptors would most likely experience which of the following symptoms?

Accepted Answer

Difficulty sensing the position of their limbs

Question 11

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

Accepted Answer

General senses are distributed throughout the body, while special senses have specialized organs.

Question 12

Which of the following is TRUE about nociceptors?

Accepted Answer

They do not adapt quickly to stimuli.

Question 13

Which of the following is an example of a mechanoreceptor?

Accepted Answer

Baroreceptor

Question 14

A person is exposed to a constant cold temperature, but after a few minutes, the sensation of cold diminishes. Which adaptation process is most likely responsible?

Accepted Answer

Peripheral adaptation

Question 15

Which tactile receptor is most abundant in the fingertips and is responsible for fine touch and pressure, adapting rapidly?

Accepted Answer

Tactile (Meissner's) corpuscle

Question 16

Which of the following best explains the role of the labeled line in sensory pathways?

Accepted Answer

It refers to the specific pathway that carries sensory information from a receptor to a specific region of the CNS.

Question 17

Which of the following is TRUE about the difference between fine touch and crude touch receptors?

Accepted Answer

Fine touch receptors have small receptive fields and provide detailed information.

Question 18

Which of the following best describes the function of proprioceptors?

Accepted Answer

They monitor the position of joints and muscles.

Question 19

Which of the following is a correct sequence of events in the sensory pathway for taste?

Accepted Answer

Stimulus binds to receptor → signal transduction → ion channels open/close → receptor potential → neurotransmitter release → action potential in sensory neuron

Question 20

Which of the following best explains why referred pain occurs?

Accepted Answer

Sensory neurons from internal organs and skin converge on the same spinal pathways, causing the brain to misinterpret the source of pain.

Sensation and Sensory Receptors: Structure, Function, and Pathways

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