Deck 29: Anatomy of the Eye

Question 1

What is the function of rods?

A) vision in dim light
B) vision in bright light
C) color vision
D) none of the above

Answer 1

A

Question 2

What part of the eye prevents the eyeball from collapsing?

A) aqueous humor
B) vitreous body
C) suspensory ligaments
D) ciliary processes

Answer 2

B

Question 3

What structure distributes tears across the surface of the eye?

A) palpebrae
B) lacrimal caruncle
C) eyelashes
D) ciliary glands

Answer 3

A

Question 4

What part of the eye changes shape to regulate the amount of light entering the lens?

A) iris
B) ciliary body
C) lens
D) pupil

Question 5

An ophthalmoscope is used to observe what part of the eye?

A) fibrous tunic
B) retina
C) the optic chiasm
D) vascular tunic

Question 6

What is the main function of the cones of the eye?

A) depth perception
B) color vision
C) vision in dim light
D) accommodation for near vision

Question 7

What structure drains tears into the nasal cavity?

A) lacrimal puncta
B) nasolacrimal duct
C) lacrimal ducts
D) lacrimal canals

Question 8

The oily substance found in tears to prevent the eyelids from sticking together is produced by the ________.

A) lacrimal glands
B) ciliary gland
C) conjunctiva
D) tarsal glands

Question 9

What is the blind spot in the eye?

A) where the macula lutea is found
B) more cones than rods are found
C) where the optic nerve leaves the eye
D) only rods occur

Question 10

The tarsal plate of the eye ________.

A) is connected to the superior rectus muscle
B) assists in winking
C) is connected to the levator palpebrae superioris
D) is made up of connective tissue that surrounds a cartilage plate.

Question 11

All of the following are muscles that control movements of the eyeball EXCEPT ________.

A) inferior oblique
B) superior rectus
C) orbicularis oculi
D) medial rectus

Question 12

The fibrous tunic consists of all of the following EXCEPT ________.

A) cornea
B) iris
C) sclera
D) corneal limbus

Question 13

Which part of the retina has an area of high cone density?

A) choroid
B) optic disc
C) macula lutea
D) none of the above

Question 14

Which cells of the retina form a network that either inhibits or facilitates communication between the photoreceptors and the bipolar cells?

A) ganglion cells
B) amacrine cells
C) horizontal cells
D) bipolar cells

Question 15

There are three layers of nerve cells in the retina. Which cells in those layers form the optic nerve?

A) rods
B) bipolar cells
C) cones
D) ganglion cells

Question 16

Which structure CANNOT be seen by looking at someone's eye with an ophthalmoscope?

A) optic chiasm
B) fovea
C) macula lutea
D) optic disc

Question 17

Which part of the eye is highly vascularized and contains melanin that absorbs light to prevent reflection?

A) sclera
B) choroid
C) iris
D) retina

Question 18

Which muscles close the eyelids?

A) superior rectus
B) lateral rectus
C) levator palpebrae superioris
D) orbicularis oris