Orbit and Eyeball

Question 1

what makes up the fibrous coat of the eyeball?

Answer 1

> cornea

> sclera

Question 2

name three components of the vascular part of the eyeball

Answer 2

> ciliary body
choroid
iris

Question 3

what produces aqueous humour?

Answer 3

the ciliary body

Question 4

describe the lens

Answer 4

> transparent
crystalline
biconvex

Question 5

from what is the lens suspended by?

Answer 5

zonules, suspensory ligaments from the ciliary body

Question 6

where is the anterior segment?

Answer 6

in front of the lens

Question 7

true or false:

the aqueous humour flows to the anterior segment and drains out of the eye at the posterior angle

Answer 7

false

its at the anterior angle it drains

Question 8

through what does the aqueous humour drains?

Answer 8

trabecular meshwork to the shlemms canal

Question 9

what bones form the bony orbit?

Answer 9

> frontal
> sphenoid
> lacrimal
> maxillary
> zygomatic
> ethmoid

Question 10

what muscle elevates the upper eyelid?

Answer 10

levator palpibrea superiorus

Question 11

what does the lacrimal duct drain into?

Answer 11

inferior meatus

Question 12

what nerve controls the ciliaris muscle?

Answer 12

oculomotor nerve

Question 13

what muscle controls pupil dilation?

Answer 13

dilator pupillae

Question 14

what muscle controls pupillary constriction?

Answer 14

constrictor pupillae

Question 15

accommodation occurs due to parasympathetic or sympathetic innervation?

Answer 15

parasympathetic

Question 16

what extrinsic ocular muscles does the oculomotor nerve supply?

Answer 16

> superior rectus
> medial rectus
> inferior rectus
> inferior oblique
> levator palpabrae superiorus

Question 17

what nerve supplies the lateral rectus?

Answer 17

abducents nerve

Question 18

what nerve supplies the superior oblique?

Answer 18

trochlear nerve

Question 19

to what sinus do the ophthalmic veins drain into?

Answer 19

the cavernous sinus