Anatomy Flashcards
Which bone makes up the roof of the orbit?
Frontal bone
Name the orbital structures?
1) Eyeball
2) Nerves
3) Muscles
4) Blood Vessels
5) Lacrimal Gland
6) Fat
Which cranial nerves are part of the orbit?
1) Optic (CN 2)
2) Oculomotor (CN 3)
3) Trochlear (CN 4)
4) Trigeminal (CN 5¹ and 5²)
5) Abducent (CN 6)
Name the muscles part of the orbit.
1) Extraocular Muscles- EOM
2) Levator Palpebrae Superioris
The wall of the eye has 3 tunics:
1) Sclera
2) Choroid
3) Retina
The cornea is responsible for __ of the refractive power of the eye
2/3
Is the cornea vascular or avascular?
Avascular
The cornea is made of:
Collagen type 1
The sclera is covered by the __
anteriorly.
Conjunctiva
The sclera is the ___ (thinnest/thickest) in the area surrounding the optic nerve.
Thickest
The sclera is made up of three divisions:
1) Episclera
2) Sclera proper
3) Lamina fusca
The episclera is made up of:
Loose connective tissue
The lamina fusca is made up of:
Elastic fibers
What gives attachment to extraocular muscles?
Sclera
The sclera allows the passage of the ___ posteriorly.
Optic nerve
Limbus-Corneoscleral Junction is a common site for:
Surgical incisions
The Limbus-Corneoscleral Junction contains which cells?
Stem cells
The anterior chamber is filled with:
Aqueous humor
The anterior chamber is the space between:
Cornea and the iris/lens
The Irido-corneal Angle contains:
The aqueous drainage system:
1) Trabecular meshwork
2) Schlemm’s canal
The Crystalline Lens are held in place by:
Zonules (suspensory ligaments) of the ciliary body
The ciliary body connects:
Iris + Choroid
The ciliary body has 2 parts:
1) Pars Plicata (Ciliary processes)
2) Pars Plana
When looking at a distant object, the ciliary muscle ___ (contracts/relaxes), while the suspensory ligaments ___ (contract/relax).
Relaxes; Contract
