Question 1

Which type of sensory receptor is primarily responsible for detecting changes in muscle stretch and is located within the perimysium of skeletal muscle?

Accepted Answer

Muscle spindle

Question 2

A patient presents with loss of sensation in the lateral forearm and weakness in the anterior arm muscles. Which nerve from the brachial plexus is most likely affected?

Accepted Answer

Musculocutaneous nerve

Question 3

Which cranial nerve is responsible for both taste sensation from the anterior two-thirds of the tongue and motor control of facial expression?

Accepted Answer

Facial nerve (VII)

Question 4

Which of the following best describes the function of nociceptors?

Accepted Answer

Detect pain from stimuli beyond the normal range

Question 5

During sensory integration, which level is responsible for converting stimulus energy into graded potential energy?

Accepted Answer

Receptor level

Question 6

Which equation best represents the relationship between the frequency of nerve impulses and the intensity of a stimulus?

Accepted Answer

$$ f = k \cdot I $$

Question 7

A person is unable to shrug their shoulders or turn their head to the opposite side. Which cranial nerve is most likely damaged?

Accepted Answer

Accessory nerve (XI)

Question 8

Which of the following is TRUE regarding the regeneration of nerves?

Accepted Answer

Axons in the PNS can regenerate if the damage is not near the cell body

Question 9

Which sensory receptor is most likely to be activated when you feel a deep, continuous pressure in your skin?

Accepted Answer

Bulbous corpuscle

Question 10

Which nerve supplies the diaphragm and is essential for breathing?

Accepted Answer

Phrenic nerve

Question 11

Which of the following is NOT a component of the reflex arc?

Accepted Answer

Cerebellum

Question 12

Which cranial nerve is responsible for vision?

Accepted Answer

Optic nerve (II)

Question 13

Which of the following best describes the function of proprioceptors?

Accepted Answer

Respond to musculoskeletal stretch

Question 14

A patient has difficulty swallowing and loss of taste sensation from the posterior one-third of the tongue. Which cranial nerve is most likely affected?

Accepted Answer

Glossopharyngeal nerve (IX)

Question 15

Which of the following is the correct order of sensory integration from reception to perception?

Accepted Answer

Receptor level → Circuit level → Perception level

Question 16

Which equation represents the threshold for generating an action potential from a graded potential?

Accepted Answer

$$ V_{GP} \geq V_{th} $$

Question 17

Which nerve is commonly referred to as the 'funny bone' and supplies the medial hand skin and hand muscles?

Accepted Answer

Ulnar nerve

Question 18

Which of the following is a function of the precommand level of motor integration?

Accepted Answer

Programs and instructions are generated by cerebellum and basal nuclei

Question 19

Which sensory receptor is rapidly adapting and found in and surrounding hair follicles?

Accepted Answer

Hair follicle receptor

Question 20

Which cranial nerve is the only one to extend beyond the head and neck, innervating the viscera including the heart and digestive organs?

Accepted Answer

Vagus nerve (X)

Peripheral Nervous System: Structure, Function, and Integration

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