Question 1

Which type of lingual papillae on the tongue does NOT contain taste buds and is primarily responsible for friction?

Accepted Answer

Filiform papillae

Question 2

A patient presents with a loss of ability to taste sour and bitter foods. Which type of gustatory receptor cell is most likely affected?

Accepted Answer

Type III gustatory receptors

Question 3

Which cranial nerves are involved in carrying gustatory information from the tongue to the brain?

Accepted Answer

Facial (VII), Glossopharyngeal (IX), and Vagus (X)

Question 4

Which of the following best explains why increased blood osmolarity induces a preference for pure water over mineral water?

Accepted Answer

Osmotic thirst drives animals to consume pure water to dilute body fluids

Question 5

Which of the following is TRUE regarding the olfactory pathway?

Accepted Answer

Olfactory receptor neurons synapse with mitral cells in the olfactory bulb

Question 6

Which of the following best describes the function of the conjunctiva?

Accepted Answer

It covers the anterior surface of the eye and inner surface of the eyelids, providing lubrication and immune surveillance

Question 7

A patient with conjunctivitis is most likely experiencing inflammation of which structure?

Accepted Answer

Conjunctiva

Question 8

Which accessory eye structure contains sebaceous and sudoriferous glands that produce secretions to lubricate the eye surface?

Accepted Answer

Lacrimal caruncle

Question 9

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

Accepted Answer

It produces mucus and lysozyme to cleanse and protect the eye surface

Question 10

Which of the following statements about taste buds is CORRECT?

Accepted Answer

Taste buds contain multiple cell types, including glial-like support cells and gustatory receptor cells

Question 11

Which of the following best describes the role of the facial nerve (VII) in gustatory transduction?

Accepted Answer

It carries taste information from the anterior two-thirds of the tongue

Question 12

Which of the following is NOT a primary taste detected by gustatory receptors?

Accepted Answer

Fat

Question 13

Which of the following statements about the function of the eyebrows is TRUE?

Accepted Answer

They shade the eyes from sunlight and prevent perspiration from entering the eye

Question 14

Which of the following best describes the palpebral fissure?

Accepted Answer

It is the gap that separates the upper and lower eyelids

Question 15

Which of the following is a correct pathway for gustatory information from the tongue to the brain?

Accepted Answer

Taste buds → facial/glossopharyngeal/vagus nerves → medulla oblongata → pons → thalamus → gustatory cortex

Question 16

Which of the following is a function of the tarsal (Meibomian) glands?

Accepted Answer

They produce oily secretions that reduce evaporation of tears from the eye surface

Question 17

Which of the following statements about the olfactory epithelium is TRUE?

Accepted Answer

It is a highly regenerative neuroepithelium containing olfactory receptor neurons, basal cells, and supporting cells

Question 18

Which of the following best describes the role of the lamina propria in the olfactory organ?

Accepted Answer

It contains olfactory glands that secrete mucus

Question 19

Which of the following is TRUE regarding the relationship between taste and smell?

Accepted Answer

Approximately 80% of taste is actually due to retronasal smell

Question 20

Which of the following is a correct description of the function of the lacrimal fluid?

Accepted Answer

It contains antibodies and lysozyme to protect against microbes

The Special Senses: Structure, Function, and Pathways

Study Guide - Practice Questions