Vision and Ophthalmology Ocular Anatomy and Physiology 3

Question 1

The trabecular meshwork drains aqueous humor into which structure?

Accepted Answer

Schlemm's canal

Answer

Ciliary body

Answer

Vitreous chamber

Answer

Episcleral veins directly

Question 2

Which muscle of the eye is responsible for intorsion and depression when the eye is in the adducted position?

Accepted Answer

Superior oblique

Answer

Inferior oblique

Answer

Superior rectus

Answer

Inferior rectus

Question 3

What is the primary function of the retinal pigment epithelium (RPE)?

Accepted Answer

Phagocytose shed photoreceptor outer segments

Answer

Produce aqueous humor

Answer

Secrete vitreous humor

Answer

Regulate corneal curvature

Question 4

The cornea derives its nutrients primarily from:

Accepted Answer

Aqueous humor and tear film

Answer

Retinal vasculature

Answer

Choroidal vessels

Answer

Conjunctival vessels

Question 5

Which portion of the optic nerve is visible during fundoscopy?

Accepted Answer

Optic disc (nerve head)

Answer

Intracranial portion

Answer

Canalicular portion

Answer

Intraorbital portion

Question 6

Accommodation of the lens is achieved by relaxation of which structure?

Accepted Answer

Zonular fibers

Answer

Ciliary muscle

Answer

Iris sphincter

Answer

Schlemm's canal