Orbit

Question 1

bones of the orbit

Answer 1

frontal
zygomatic
maxillary
ethmoid
lacrimal
sphenoid
palatine

Question 2

apex of the orbit is the

Answer 2

optic canal located in the sphenoid bone

Question 3

the superior orbital fissure is between the

Answer 3

greater and lesser wings of the sphenoid bone

Question 4

inferior orbital fissue is between the

Answer 4

greater wing of the sphenoid and maxilla

Question 5

medial wall of the orbit is made of

Answer 5

ethmoid
lacrimal
maxillary
frontal
sphenoid
palatine

Question 6

four rectus muscles originate from

Answer 6

a common tendonus ring in the post portion of the orbit

Question 7

they insert into the

Answer 7

scerla of the anterior eyeball

posterior to the cornea

Question 8

two oblique muscles insert on the

Answer 8

posterior lateral portion of the eyeball

Question 9

superior oblique is from ______ to ______

Answer 9

from sphenoid to fibrous trochlea ring to sclera deep to superior rectus

Question 10

inferior oblique originates from the

Answer 10

anterior floor of the orbit

Question 11

it travels posterior and inserts onto the

Answer 11

sclera deep to the lateral rectus

Question 12

Superior and interior rectus _____ the front of the eye

Answer 12

adducts

Question 13

Superior and inferior oblique _____ the front of the eye

Answer 13

abducts

Question 14

ABduction of the eye is

Answer 14

Superior oblique
lateral rectus
inferior oblique

Question 15

ADDuction

Answer 15

Superior Rectus
Medial Rectus
Inferior Rectus

Question 16

Elevation is

Answer 16

Superior rectus

Inferior oblique

Question 17

Depression is

Answer 17

Inferior Rectus

Superior oblique

Question 18

internal rotation can be accomplished by

Answer 18

superior rectus

superior oblique

Question 19

External rotation can be accomplished by

Answer 19

inferior rectus

inferior oblique

Question 20

Levator Palpebrea superiorism does what

innervated by:

Answer 20

raises upper eyelid

Oculomotor N.

Question 21

Superior Tarsal inserts into:

Answer 21

tarsal plate of upper eyelid

Question 22

Superior Tarsal is under _______ innervation

Answer 22

sympathetic innervation

Question 23

Superior Tarsal causes eyelid to ________

Answer 23

open widely during fright

Question 24

contents of the orbit

Answer 24

eyeball
CN II
CN III
CN IV
CN VI
CN V1 
ocular muscles 
lacrimal gland
lacrimal duct and sac
ophthalmic artery
Ophthalmic vein
fat

Question 25

Ophthalmic N. (V1) is

Answer 25

general sensory to the contents of orbit

Question 26

branches of the V1

Answer 26

Frontal N. Nasociliary N. Lacrimal N.

Question 27

Frontal N. gives off

Answer 27

Supraorbital and Supratrochlear N.

Question 28

Frontal N. is

Answer 28

sensory to skin on forehead

Question 29

Nasociliary N. gives off

Answer 29

long ciliary N. | Anterior Ethmodial N. that gives off external nasal

Question 30

Long Ciliary N. is

Answer 30

sensory to the eyeball

Question 31

Anterior Ethmoidal N. is

Answer 31

sensory to superoir nasal cavity

Question 32

Lacrimal N. is

Answer 32

sensory to lacrimal gland and lateral upper eyelid

Question 33

Oculomotor is motor to

Answer 33

``` superior medial inferior rectus inferior oblique levator palpebrea superioris m. ```

Question 34

Oculomotor is parasympathetic motor to _______ via

Answer 34

ciliary mm. and sphincter of pupil via Short Ciliary M.

Question 35

Sensory to the Eye is via

Answer 35

V1 nasociliary n. and long ciliary n.

Question 36

parasympathetic to the eye is

Answer 36

Oculomotor N. that synapse at ciliary gang then via short ciliary N. to sphincter of pupil and ciliary mm

Question 37

Sympathetic to the eye is via

Answer 37

sympathetic trunk and internal carotid plexus via long ciliary N.

Question 38

short ciliary N. to

Answer 38

sphincter of pupil and ciliary mm.

Question 39

long ciliary N. to

Answer 39

dilator of pupil

Question 40

Trochlear N. is motor to

Answer 40

superior oblique m

Question 41

Abducent N. is motor to

Answer 41

lateral rectus m.

Question 42

Inner Layer includes the

Answer 42

sclera and cornea

Question 43

sclera is t

Answer 43

the opaque fibrous covering 5/6 of eyeball

Question 44

cornea is

Answer 44

transparent fibrous anterior portion which allows light to pass through 70% of focusing light on retina

Question 45

Middle Layer includes the

Answer 45

Iris Choroid Ciliary Body

Question 46

Iris is the

Answer 46

thin contractile diaphragm on surface of lens

Question 47

the pupil is the

Answer 47

central apeture

Question 48

the Iris contains 2

Answer 48

smooth muscles | sphincter and dilator of pupil

Question 49

Choroid is the

Answer 49

vascular layer of eye

Question 50

Ciliary body contains

Answer 50

smooth muscle which change the shape of the lens

Question 51

ciliary body also secretes

Answer 51

aqueous humor

Question 52

the aqueous humor provides

Answer 52

nutrients & moisture to the lens and cornea

Question 53

The inner layer contains

Answer 53

retina

Question 54

the retina is the

Answer 54

light sensing portion

Question 55

retina is composed of

Answer 55

rods and cones

Question 56

macula is specialized for

Answer 56

visual acuity

Question 57

most acute vision and the most cones is

Answer 57

fovea centralis

Question 58

optic disc is where

Answer 58

the optic N. enters the eyeball

Question 59

the optic disc is ______ to light

Answer 59

insensitive

Question 60

interior of eyeball is filled with

Answer 60

vitreous humor enclosed in vitreous body

Question 61

anterior & posterior chambers are filled with

Answer 61

aqueous humor

Question 62

the aqueous humor is secreted into

Answer 62

posterior chamber

Question 63

it is absorbed into

Answer 63

scieral sinus of anterior chamber

Question 64

blockage of the sinus may lead to increased

Answer 64

intraocular pressure: | glaucoma

Question 65

Optic N. is an outgrowth of

Answer 65

brain covered with 3 meninges

Question 66

rods detect

Answer 66

light

Question 67

cones detect

Answer 67

color red green blue