Eye and Orbit (week 3) Flashcards
What muscle opens the upper eyelid
Levator Palpebrae Superioris
What CN innervates muscle to open eye
CN III
What CN innervates muscle to close eye
CN VII
What is the Tarsal Plate
Connective tissue “skeleton” of eyelid
Two glands that make up Tarsal Plate
Tarsal glands and Ciliary glands
What do the Tarsal glands do
secrete a fatty secretion and keeps eyelids from sticking together
Function of Ciliary glands
Sebaceous glands
What is the Conjunctiva
Mucous membrane of eyelid and eyeball
Conjunctiva consists of what two parts
Palpebral conjunctiva and Bulbar conjunctiva
Characteristic of Palpebral conjunctiva
Continuous with skin, very vascular
Continuous of Bulbar conjunctiva
Continuous with cornea and transparent
What cranial nerve and fibers innervate Lacrimal gland
CN VII, Parasympathetic fibers
Pathway for Lacrimal Gland
Tears from LG –> Superior and Inferior puncta –> Lacrimal Canal –> Lacrimal sac –> Nasolacrimal duct –> Nasal cavity
The Cornea is continuous with what?
Sclera
Sclera is continuous with what?
Dural sheath of optic nerve and Cornea
Eyeball is made up of what three layers
Outer Fibrous Coat, Middle Vascular Coat and Inner Retinal layer
What makes up the Outer Fibrous coat
The continuous layer of the dural sheath of optic fiber, Sclera and Cornea
What makes up the Middle Vascular coat
The Choroid
Choroid is fixed between what two structures?
Sclera and Retina
What makes up the Inner Retinal layer
Retina
What is the Ciliary body?
The end of the Choroid
Ciliary process
Folds in Ciliary body