Question 1

Which of the following statements best explains why olfactory stimulation is unique among the special senses?

Accepted Answer

Olfactory stimulation is the only sensory information that reaches the cerebral cortex without first synapsing in the thalamus.

Question 2

A patient presents with a 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 3

Which papillae are most numerous on the tongue but do NOT contain taste buds?

Accepted Answer

Filiform papillae

Question 4

A convex lens in the eye causes light rays to converge. If the focal point is not on the retina, which condition is most likely present?

Accepted Answer

Refractive error (such as myopia or hyperopia)

Question 5

Which of the following best describes the function of the sphincter pupillae muscle?

Accepted Answer

Constricts the pupil under parasympathetic stimulation

Question 6

During the process of hearing, which structure is responsible for amplifying the vibrations from the tympanic membrane before they reach the inner ear?

Accepted Answer

Auditory ossicles

Question 7

Which of the following is TRUE regarding the neuronal pathways for taste?

Accepted Answer

Taste information decussates in the medulla and then projects to the thalamus.

Question 8

Which of the following best explains why bitter taste receptors are highly sensitive and located on the posterior aspect of the tongue?

Accepted Answer

Bitter substances are often toxic alkaloids, so high sensitivity at the posterior tongue helps prevent ingestion.

Question 9

A patient has difficulty elevating their eye and turning it laterally. Which extrinsic eye muscle and cranial nerve are most likely affected?

Accepted Answer

Inferior oblique muscle and oculomotor nerve (III)

Question 10

Which of the following structures is responsible for draining aqueous humor from the anterior chamber of the eye?

Accepted Answer

Canal of Schlemm

Question 11

Which of the following best describes the role of the macula in the retina?

Accepted Answer

It contains the fovea centralis, the area of greatest visual acuity.

Question 12

Which of the following is the correct sequence for the passage of olfactory information from the nasal cavity to the cerebral cortex?

Accepted Answer

Olfactory epithelium → cribriform plate → olfactory bulb → olfactory tract → cerebral cortex

Question 13

Which of the following best explains why the image formed on the retina is upside down and reversed left to right?

Accepted Answer

A convex lens bends light rays so they converge at a focal point, inverting the image.

Question 14

Which of the following is a function of the lacrimal apparatus?

Accepted Answer

Produces tears to moisten, lubricate, and wash the eye

Question 15

Which of the following statements about taste buds is CORRECT?

Accepted Answer

Basal cells are stem cells that replace taste cells every 7 to 10 days.

Question 16

Which of the following best describes the effect of parasympathetic stimulation on the intrinsic muscles of the iris?

Accepted Answer

It causes the sphincter pupillae to contract, constricting the pupil.

Question 17

Which of the following is the primary function of the rods in the retina?

Accepted Answer

Vision under low light conditions (scotopic vision)

Question 18

Which of the following best explains why humans crave salty and sweet tastes?

Accepted Answer

Salty and sweet tastes are associated with essential nutrients such as sodium and carbohydrates.

Question 19

Which of the following is TRUE regarding the function of the ciliary body?

Accepted Answer

It contains muscles that change the shape of the lens for focusing.

Chapter 15: The Special Senses – Study Notes for Anatomy & Physiology

Study Guide - Practice Questions

Study Guide - Flashcards