Question 1

Which of the following best describes the function of the sclera in the eye?

Accepted Answer

It protects and shapes the eyeball and anchors extrinsic eye muscles.

Question 2

A patient presents with a painful, swollen lump at the base of their eyelash. Which clinical condition is most likely responsible?

Accepted Answer

Sty

Question 3

Which structure is responsible for regulating the amount of light entering the eye?

Accepted Answer

Pupil

Question 4

A child with a sore throat develops hearing loss and bulging of the eardrum. Which structure is most likely inflamed?

Accepted Answer

Middle ear (tympanic cavity)

Question 5

Which of the following is TRUE regarding the optic disc?

Accepted Answer

It is the site where the optic nerve leaves the eye and lacks photoreceptors.

Question 6

Which of the following best explains why a cold or nasal inflammation can cause watery eyes?

Accepted Answer

It causes swelling of the lacrimal mucosa, constricting ducts and preventing tear drainage.

Question 7

Which of the following is the correct order of sound transmission through the ear?

Accepted Answer

Tympanic membrane → malleus → incus → stapes → oval window

Question 8

Which of the following statements about the retina is CORRECT?

Accepted Answer

It contains photoreceptors, neurons, and glial cells, and is the origin of the optic nerve.

Question 9

A patient experiences loss of high-resolution color vision but retains dim light vision. Which retinal cells are most likely damaged?

Accepted Answer

Cones

Question 10

Which of the following best describes the function of the semicircular canals?

Accepted Answer

They monitor dynamic equilibrium and rotational movements of the head.

Question 11

Which of the following is a requirement for a chemical to be tasted?

Accepted Answer

It must be dissolved in saliva and contact gustatory hairs.

Question 12

Which of the following best explains why spicy foods can be perceived as 'hot'?

Accepted Answer

They activate pain receptors (nociceptors) in the mouth.

Question 13

A patient with motion sickness is experiencing conflicting sensory inputs. Which of the following is most likely TRUE?

Accepted Answer

Visual input differs from equilibrium input, causing nausea and dizziness.

Question 14

Which of the following is the main function of the ciliary body in the eye?

Accepted Answer

It secretes aqueous humor and controls the shape of the lens.

Question 15

Which of the following is a characteristic of conduction deafness?

Accepted Answer

It is caused by blocked sound conduction to fluids of the internal ear.

Question 16

Which of the following best describes the role of the basilar membrane in hearing?

Accepted Answer

It vibrates at specific locations according to sound frequency, stimulating hair cells.

Question 17

Which of the following is TRUE regarding the physiology of olfaction?

Accepted Answer

Odorants must be volatile and dissolve in olfactory epithelium fluid to bind to receptor proteins.

Question 18

Which of the following is NOT a basic taste sensation?

Accepted Answer

Pungent

Question 19

A patient with retinal detachment is at risk for which of the following?

Accepted Answer

Permanent blindness if not treated promptly

Question 20

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

Accepted Answer

$$v = f 	imes \lambda$$

Nurs 1002-Obj#15

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