Terms Lab 24 (complete)

Question 1

orbit

Answer 1

Cavity in the skull that contains the eyeball and associated structures

Question 2

periorbita

Answer 2

Connective tissue sheath that surronds the eye and its muscles

Question 3

lacrimal gland

Answer 3

Lies in the periorbita; located on the lateral aspect of the bulbus oculi

Question 4

superficial gland of the third eyelid

Answer 4

Not seen in gross anatomy

Question 5

levator palpebrae superioris muscle

Answer 5

Most dorsal “strap” muscle of the eye muscles

Question 6

rectus muscles (dorsal, ventral, medial, and lateral)

Answer 6

Four flat “strap” muscles; insert closest to the sclera

Question 7

retractor bulbi muscle

Answer 7

Single muscle with four separate bellies; located between the rectus muscles; smaller and more proximal to the optic nerve

Question 8

ventral oblique muscle

Answer 8

Muscle that wraps ventrally from the lateral aspect of the bulbus oculi; runs obliquely

Question 9

dorsal oblique muscle

Answer 9

Muscle that runs obliquely from the medial aspect of the bulbus oculi to a trochlea and caudally along the optic nerve

Question 10

trochlea (orbit)

Answer 10

Located on the medial aspect of the bulbus oculi

Question 11

bulbus oculi

Answer 11

“eyeball”

Question 12

external fibrous coat (eye)

Answer 12

Includes:

1) cornea (anterior
(2) sclera (posterior)

Question 13

cornea

Answer 13

Transparent external fibrous coat on the anterior aspect of the eye

Question 14

sclera

Answer 14

Opaque white external fibrous coat on the posterior aspect of the eye

Question 15

middle vascular coat (eye)

Answer 15

Includes:

(1) choroid
(2) ciliary body
(3) iris

Question 16

iris

Answer 16

Anterior portion of the middle vascular coat; Circular smooth muscle that forms the outline of the pupil

Question 17

pupil

Answer 17

Central opening of the iris

Question 18

choroid

Answer 18

Posterior portion of the middle vascular coat; pigmented layer attached to the sclera

Question 19

tapetum lucidum

Answer 19

Layer deep to the pigmented choroid; reflective surface that is very close to the retina; only in the very posterior part of the eye

Question 20

ciliary body

Answer 20

Posterior to the iris; attached to the lens with suspensory ligaments

Question 21

lens

Answer 21

(obvious)

Question 22

anterior chamber (eye)

Answer 22

Space between the cornea and the iris

Question 23

posterior chamber (eye)

Answer 23

Space between the iris and the lens

Question 24

aqueous humor

Answer 24

Substance that fills the anterior and posterior chambers (cornea to iris to lens)

Question 25

vitreous chamber

Answer 25

Space posterior to the lens

Question 26

vitreous body

Answer 26

Substance that fills vitreous chamber (posterior to the lens)

Question 27

internal coat (eye)

Answer 27

Includes:

(1) retina
(2) blood vessels
(3) nerves

Question 28

retina

Answer 28

Deepest layer; located only in the posterior conpartment

Question 29

optic disc

Answer 29

Location where the retinal axons exit the sclera as the optic nerve

Question 30

fundus

Answer 30

Portion of the retina that is visible when viewed through the pupil

Question 31

external jugular vein

Answer 31

Largest superficial vein that travels cranially from the neck

Question 32

linguofacial vein

Answer 32

First ventral branch from the external jugular vein

Question 33

lingual vein

Answer 33

Ventral branch from the linguofacial vein

Question 34

facial vein

Answer 34

Dorsal branch from the linguofacial vein

Question 35

maxillary vein

Answer 35

First dorsal branch from the external jugular vein