Question 1

Which of the following best describes the function of mechanoreceptors in the cochlea during the process of hearing?

Accepted Answer

They convert physical vibrations from sound waves into electrical signals by bending hair cells, allowing $$K^+$$ ions to enter and depolarize the cell.

Question 2

A patient presents with hyperopia. Which anatomical feature is most likely responsible for this condition?

Accepted Answer

The eyeball is too short, causing light to focus after the retina.

Question 3

Which cranial nerves are involved in transmitting taste sensations from the tongue to the brain?

Accepted Answer

Facial, Glossopharyngeal, and Vagus nerves

Question 4

Which of the following best explains how salty taste is transduced in gustatory cells?

Accepted Answer

Sodium ions ($$Na^+) $$enter the cell directly through ion channels, causing depolarization.

Question 5

Which structure in the eye is responsible for focusing light onto the retina and is held in place by suspensory ligaments attached to ciliary muscles?

Accepted Answer

Lens

Question 6

What is the primary function of the Eustachian (auditory) tube in the middle ear?

Accepted Answer

To equalize air pressure between the middle ear and the pharynx.

Question 7

Which of the following is TRUE regarding rods and cones in the retina?

Accepted Answer

Rods are more numerous than cones and are responsible for vision in low light conditions.

Question 8

Which of the following best describes the process of phototransduction in the retina?

Accepted Answer

Light causes a change in the conformation of photopigments in rods and cones, leading to a change in membrane potential.

Question 9

Which of the following sensory receptor types is correctly matched with its stimulus?

Accepted Answer

Mechanoreceptor – detects physical stimuli such as touch and sound

Question 10

A person with damage to the dorsal stream of visual processing would most likely have difficulty with which of the following?

Accepted Answer

Locating objects in space and guiding movements in response

Question 11

Which of the following statements about the organ of Corti is correct?

Accepted Answer

It contains hair cells anchored to the tectorial membrane, which are responsible for converting mechanical vibrations into electrical signals.

Question 12

Which of the following is a correct description of static equilibrium?

Accepted Answer

It is detected by mechanoreceptors in the vestibule and involves sensing the position of the head when not moving.

Question 13

Which of the following best explains why cochlear implants are used in patients with damaged hair cells?

Accepted Answer

They directly stimulate the auditory nerve, bypassing the damaged hair cells.

Question 14

Which of the following equations correctly represents the relationship between frequency ($$f$$), wavelength ($$\lambda$$), and the speed of sound ($$v) in $$the cochlea?

Accepted Answer

$$v = f 	imes \lambda$$

Question 15

Which of the following is NOT a function of the accessory eye structures?

Accepted Answer

Focusing light onto the retina

Question 16

Which of the following best describes the difference between exteroceptors and interoceptors?

Accepted Answer

Exteroceptors are located near the stimulus outside the body, while interoceptors are found within internal organs.

Question 17

Which of the following is TRUE regarding the transduction of sour taste?

Accepted Answer

Sour taste is perceived when hydrogen ions ($$H^+) $$depolarize gustatory cells.

Question 18

Which of the following best describes the pathway of olfactory information from the nose to the brain?

Accepted Answer

Olfactory receptor neurons send axons to the olfactory bulb, which then projects to the olfactory cortex, hypothalamus, and limbic system.

Question 19

Which of the following statements about the neural tunic (sensory layer) of the eye is correct?

Accepted Answer

It contains the retina, pigmented epithelium, rods, cones, and optic nerve.

Special Senses and Sensory Receptors: ANP Study Guide

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