Question 1

Which of the following best describes the main difference between signal detection and signal transduction in sensory physiology?

Accepted Answer

Signal detection is the process by which sensory receptors perceive the presence of a stimulus, whereas signal transduction is the conversion of that stimulus into an electrical signal.

Question 2

Which of the following statements correctly compares the receptors of special senses to those of general senses?

Accepted Answer

Special sense receptors are specialized cells confined to the head, whereas general sense receptors are simple and distributed throughout the body.

Question 3

A patient presents with loss of taste sensation on the anterior two-thirds of the tongue. Which cranial nerve is most likely affected?

Accepted Answer

Facial nerve (VII)

Question 4

Which structure in the eye is responsible for changing the shape of the lens during accommodation?

Accepted Answer

Ciliary body

Question 5

A person with myopia has difficulty seeing distant objects clearly. Which of the following best explains the optical defect in myopia?

Accepted Answer

The lens focuses light in front of the retina.

Question 6

Which of the following best describes the function of the maculae in the vestibular system?

Accepted Answer

Detecting static equilibrium and linear acceleration

Question 7

Which of the following best explains why there is a 'blind spot' at the optic disc?

Accepted Answer

There are no photoreceptors at the optic disc.

Question 8

Which of the following structures is responsible for the transduction of sound into nervous signals?

Accepted Answer

Cochlear hair cells in the spiral organ

Question 9

A patient experiences vertigo when turning their head quickly. Which structure is most likely involved in detecting this angular movement?

Accepted Answer

Crista ampullaris of the semicircular ducts

Question 10

Which of the following best describes the path of light through the eye to the retina?

Accepted Answer

Cornea → aqueous humor → lens → vitreous humor → retina

Question 11

Which of the following statements about rods and cones is correct?

Accepted Answer

Rods are more sensitive to dim light and are responsible for black and white vision.

Question 12

Which of the following best describes the function of the pharyngotympanic (auditory) tube?

Accepted Answer

Equalizes air pressure between the middle ear and nasopharynx

Question 13

Which of the following is a correct sequence for the conduction of sound from the auricle to the inner ear?

Accepted Answer

Auricle → tympanic membrane → ossicles → oval window → cochlea

Question 14

Which of the following best explains the difference between pitch and loudness of sound?

Accepted Answer

Pitch is determined by the frequency of sound waves, while loudness is determined by their amplitude.

Question 15

Which of the following best describes the function of the lacrimal apparatus?

Accepted Answer

Produces and drains tears to lubricate and protect the eye

Question 16

A patient is unable to distinguish between sweet and umami tastes but can still detect sour, salty, and bitter. Which of the following is most likely impaired?

Accepted Answer

Gustatory cells sensitive to amino acids and sugars

Question 17

Which of the following best describes the role of the tarsal glands?

Accepted Answer

Secrete an oily substance to prevent eyelids from sticking together

Question 18

Which of the following best describes the function of ceruminous glands in the ear?

Accepted Answer

Produce wax to trap debris and protect the tympanic membrane

Question 19

Which of the following best explains how the ciliary body changes the focal length of the lens during accommodation?

Accepted Answer

Contraction of the ciliary body relaxes the suspensory ligaments, allowing the lens to become more rounded for near vision.

Question 20

A person is unable to maintain balance when standing still but can walk without difficulty. Which structure is most likely impaired?

Accepted Answer

Maculae of the utricle and saccule

Chapter 15: The Special Senses – Structured Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards