Eye and Orbit (week 3)

Question 0

What muscle opens the upper eyelid

Answer 0

Levator Palpebrae Superioris

Question 1

Function of Orbicularis Oculi

Answer 1

Closes eyelids

Question 2

What CN innervates muscle to open eye

Answer 2

CN III

Question 3

What CN innervates muscle to close eye

Answer 3

CN VII

Question 4

What is the Tarsal Plate

Answer 4

Connective tissue “skeleton” of eyelid

Question 5

Two glands that make up Tarsal Plate

Answer 5

Tarsal glands and Ciliary glands

Question 6

What do the Tarsal glands do

Answer 6

secrete a fatty secretion and keeps eyelids from sticking together

Question 7

Function of Ciliary glands

Answer 7

Sebaceous glands

Question 8

What is the Conjunctiva

Answer 8

Mucous membrane of eyelid and eyeball

Question 9

Conjunctiva consists of what two parts

Answer 9

Palpebral conjunctiva and Bulbar conjunctiva

Question 10

Characteristic of Palpebral conjunctiva

Answer 10

Continuous with skin, very vascular

Question 11

Continuous of Bulbar conjunctiva

Answer 11

Continuous with cornea and transparent

Question 12

What cranial nerve and fibers innervate Lacrimal gland

Answer 12

CN VII, Parasympathetic fibers

Question 13

Pathway for Lacrimal Gland

Answer 13

Tears from LG –> Superior and Inferior puncta –> Lacrimal Canal –> Lacrimal sac –> Nasolacrimal duct –> Nasal cavity

Question 14

The Cornea is continuous with what?

Answer 14

Sclera

Question 15

Sclera is continuous with what?

Answer 15

Dural sheath of optic nerve and Cornea

Question 16

Eyeball is made up of what three layers

Answer 16

Outer Fibrous Coat, Middle Vascular Coat and Inner Retinal layer

Question 17

What makes up the Outer Fibrous coat

Answer 17

The continuous layer of the dural sheath of optic fiber, Sclera and Cornea

Question 18

What makes up the Middle Vascular coat

Answer 18

The Choroid

Question 19

Choroid is fixed between what two structures?

Answer 19

Sclera and Retina

Question 20

What makes up the Inner Retinal layer

Answer 20

Retina

Question 21

What is the Ciliary body?

Answer 21

The end of the Choroid

Question 22

Ciliary process

Answer 22

Folds in Ciliary body

Question 23

What produces aqueous humor

Answer 23

Ciliary folds, flows from posterior to anterior chamber

Question 24

Ciliary muscles are controlled by what CN and what fibers

Answer 24

CN III, parasympathetic fibers

Question 25

What do the suspensory ligaments do to the lens

Answer 25

move lens to focus

Question 26

Contraction of the ciliary muscles does what to the lens

Answer 26

Makes it rounder

Question 27

Flattening of the lens is caused by what?

Answer 27

Relaxation

Question 28

Lens is Avascular? T or F

Answer 28

True

Question 29

What is the optic disk

Answer 29

Where the optic nerve enters; Insensitive to light

Question 30

What is the Macula Lutea

Answer 30

A disc with the fovea centralis; most acute vision

Question 31

Superior Rectus action

Answer 31

Elevate, Adduct

Question 32

Middle Rectus action

Answer 32

Adduct

Question 33

Lateral Rectus action

Answer 33

Abduct

Question 34

Superior Oblique action

Answer 34

Down and out (Abduct and lowers)

Question 35

Action of Inferior Rectus

Answer 35

Lowers and Adducts

Question 36

Attachment of Inferior Oblique

Answer 36

Maxillary bone

Question 37

Attachment of most eye muscles

Answer 37

Common Tendinous Ring

Question 38

What Major artery supplies blood to eye

Answer 38

Internal Carotid

Question 39

What arterial branches supplies blood to Ciliary Body and Iris

Answer 39

Ciliary Arteries-->Long Ciliary arteries | Lacrimal Artery --> anterior ciliary arteries

Question 40

Short Posterior Ciliary arteries supply blood to what?

Answer 40

Choroid Layer

Question 41

Two veins associated with eye?

Answer 41

Superior Opthalmic vein and Inferior Opthalmic vein

Question 42

Where does the Superior opthalmic vein drain?

Answer 42

Cavernous sinus

Question 43

Where does Inferior Opthalmic vein drain?

Answer 43

Pterygoid plexus and cavernous sinus

Question 44

Both veins of eye anastomose with what other vein?

Answer 44

Facial vein

Question 45

What nerve supplies special sensory to the eye?

Answer 45

Optic nerve (CN II)

Question 46

What nerve branch provides general sensory to the eyeball?

Answer 46

Long Ciliary nerve, a branch of the Nasociliary nerve of V1

Question 47

What nerve supplies general sensory to the eyeball and lower eyelid

Answer 47

Inferior Palpebral nerve, a branch of Infraorbital nerve of V2

Question 48

What are the post parasympathetic nerves to the ciliary muscle and Sphinctor puillae called after they leave the ciliary ganglion?

Answer 48

Short Ciliary nerves

Question 49

What structures do oculomotor parasympathetic fibers innervate?

Answer 49

Ciliary muscles and sphinctor pupillae

Question 50

What structures of the eye need sympathetic innervation?

Answer 50

Dilator Pupillae and Superior Tarsal muscle

Question 51

Corneal Reflex normal should do what?

Answer 51

Cause both eyelids to close

Question 52

Absent ipsilateral with normal contralateral response?

Answer 52

Normal V with abnormal ipsilateral VII

Question 53

Absent contralateral response

Answer 53

Abnormal contralateral VII

Question 54

Absent bilateral response

Answer 54

V abnormality OR bilateral VII abnormality