Question 1

Which of the following best describes the function of afferent neurons in the sensory nervous system?

Accepted Answer

Carry sensory information from the periphery to the CNS

Question 2

According to the law of specific energies, which statement is correct regarding sensory receptors?

Accepted Answer

A receptor responds maximally to its adequate stimulus modality

Question 3

A patient presents with loss of proprioception in their limbs. Which receptor type is most likely impaired?

Accepted Answer

Proprioceptors

Question 4

Which process describes the conversion of stimulus energy into electrical signals in sensory neurons?

Accepted Answer

Transduction

Question 5

In the context of sensory coding, what does the labeled line theory propose?

Accepted Answer

Each sensory modality is transmitted along a specific neural pathway to the brain

Question 6

Which equation best represents the relationship between stimulus intensity and action potential frequency in sensory neurons?

Accepted Answer

$$f = k 	imes I$$

Question 7

A strong stimulus applied to the skin results in the activation of multiple sensory units. What is this phenomenon called?

Accepted Answer

Recruitment

Question 8

Which receptor type is primarily responsible for detecting harmful or pain stimuli in the skin?

Accepted Answer

Nociceptors

Question 9

During a stretch reflex, which structure detects changes in muscle length and initiates reflex excitation?

Accepted Answer

Muscle spindle

Question 10

Which of the following best explains the role of the Golgi tendon organ during high force muscle contraction?

Accepted Answer

It inhibits the muscle via type Ib afferent neurons to prevent damage

Question 11

A patient is unable to coordinate eye and body movements. Which brain structure is most likely affected?

Accepted Answer

Cerebellum

Question 12

Which cranial nerve is responsible for transmitting visual information to the brain?

Accepted Answer

Optic nerve (II)

Question 13

During PNF stretching, activation of the Golgi tendon organ leads to which physiological response?

Accepted Answer

Reflex inhibition of the stretched muscle

Question 14

Which of the following is TRUE regarding the muscle spindle?

Accepted Answer

It contains intrafusal fibers and detects changes in muscle length

Question 15

If the frequency of action potentials in a sensory neuron increases, what can be inferred about the stimulus?

Accepted Answer

The stimulus intensity has increased

Question 16

Which cranial nerve is involved in equilibrium and hearing?

Accepted Answer

Vestibulocochlear nerve (VIII)

Question 17

A patient with damage to the brainstem may experience deficits in which of the following?

Accepted Answer

Processing of cranial nerve reflexes

Question 18

Which equation best describes the relationship between the number of activated sensory units ($$N) $$and stimulus intensity ($$I) in $$population coding?

Accepted Answer

$$N = k 	imes I$$

Question 19

Which of the following is NOT a function of the cerebellum?

Accepted Answer

Processing of olfactory information

Question 20

Which sensory receptor is most likely to be activated when you touch a hot surface?

Accepted Answer

Thermoreceptor

31 - Part 1: Sensory Nervous System and Somatosensory Physiology Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards