Anatomy - Orbit, eye and nose

Question 1

what two bones contribute to the superior wall of the orbit?

Answer 1

frontal

sphenoid

Question 2

floor of the orbit is formed by?

Answer 2

maxilla, palatine and zygomatic

Question 3

medial wall of the bony orbit if formed by?

Answer 3

ethmoid, maxilla, palatine and zygomatic

Question 4

lateral wall of the orbit is formed by?

Answer 4

zygomatic and greater wing of the sphenoid

Question 5

what is enophthalmos?

Answer 5

retraction of the eyeball - disease, dehydration or starvation

Question 6

what comprises the inner layer of the eyeball?

Answer 6

neural layer - formed by the retina

Question 7

what comprises the outer layer of the eyeball?

Answer 7

fibrous layer - sclera and cornea

Question 8

the vascular layer of the eyeball is comprised of what?

Answer 8

choroid, ciliary body and iris

Question 9

what structure produces aqueous humor?

Answer 9

ciliary epithelium

Question 10

where would you find aqueous humor?

Answer 10

anterior and posterior chambers of the eyeball

Question 11

which part of the retina is insensitive to light?

Answer 11

optic disc

Question 12

which part of the retina has the highest visual acuity?

Answer 12

fovea

Question 13

what causes glaucoma?

Answer 13

increased intraocular pressure

Question 14

what structures within the eye are responsible for the refraction of light?

Answer 14

cornea
lens
vitreous
aqueous humours

Question 15

which extraocular muscles does CNIII innervate?

Answer 15

inferior rectus
inferior obliques
medial rectus and superior rectus

Question 16

the trochlear nerve (CNIV) innervates which EOM?

Answer 16

superior oblique

Question 17

the abducens nerve (CNVI) innervates which EOM?

Answer 17

lateral rectus

Question 18

what movements are achieved by the superior oblique?

Answer 18

depression
abduction
medial rotation

Question 19

what movements are achieved by the inferior oblique?

Answer 19

elevation
abduction
lateral rotation

Question 20

what movements are achieved by the superior rectus?

Answer 20

elevation
adduction
medial rotation

Question 21

what movements are achieved by the inferior rectus?

Answer 21

depression
adduction
lateral rotation

Question 22

what movements are achieved by the medial rectus?

Answer 22

adduction

Question 23

what movements are achieved by the lateral rectus?

Answer 23

abduction

Question 24

from which vessel does the ophthalmic artery arise?

Answer 24

internal carotid

Question 25

what type of epithelium lines the nasal cavity?

Answer 25

pseudostratified columnar epithelium

Question 26

which muscle of the soft palate is not innervated by the pharyngeal branch of the vagus nerve?

Answer 26

tensor veli palatini
innervated by trigeminal
palatoglossus - glossopharyngeal