Term
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Definition
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Term
| What are the bones of the orbital margin? |
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Definition
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Term
| Increased intraorbital pressure, as from a blow to the eye, can cause a _____. |
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Definition
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Term
| Name the structures that the optic canal transmits. |
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Definition
optic n. (CN II)
ophthalmic a. |
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Term
| Name the structures that the superior orbital fissure transmits. |
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Definition
oculomotor n. (CN III)
trochlear n. (CN IV)
ophthalmic n. (V1)
abducens n. (CN VI) |
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Term
| Name the structures that the inferior orbital fissure transmits. |
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Definition
maxillary n (V2)
infraorbital a/v |
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Term
| Where is the naso lacrimal duct housed? |
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Definition
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Term
| funnel-shaped shearth that fuses with the dural sheath of the optic nerve. Surrounds the orbital fat, eyeball, and associated mm, nn, aa, vv. |
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Definition
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Term
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Definition
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Term
| Where the eyelids meet a the medial and lateral angles. |
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Definition
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Term
| the uppper and lower eyelids are separated by a transverse cleft know was a ____. |
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Definition
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Term
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Definition
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Term
| open on the ciliary follicles. |
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Definition
| sebaceous glands (of Zeis) |
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Term
| Inflammation of a sebaceous gland appears as a swelling on the eyelid margin known as a ____. |
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Definition
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Term
| Name the muscles of the outter eye. |
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Definition
orbicularis oculi - palpebral portion
levator palpebrae superioris m.
tarsal mm. |
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Term
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Definition
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Term
| anchor the tarsal plates to each other and to the bony orbital margins. |
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Definition
| medial and lateral palpebral ligaments |
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Term
| Modified sebaceous glands. Secretions create a barrier that prevents tears from overflowing the eye. |
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Definition
| Tarsal (Meibomian) glands. |
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Term
| Inflammation of the tarsal glands produces a painful swelling called a _____. |
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Definition
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Term
| Seals the orbital contents from the external environment. |
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Definition
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Term
| individuals of East Asian ancestry, or those have trisom 21 Down Syndrome exibit a fold of skin called ____. |
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Definition
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Term
| What are the two types of conjuntiva and their typical coloration? |
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Definition
palpebral -> reddish pink
bulbar -> clear |
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Term
| Name the parts of the conjunctival sac. |
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Definition
lacus lacrimalis
lacrimal caruncle
semilunar fold |
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Term
Name the blood supply and innervation to the lacrimal glands.
Parasympathetics stimulate ___. |
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Definition
lacrimal a.
lacrimal n.
lacrimation |
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Term
| Name the parts of the lacrimal apparatus. |
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Definition
lacrimal ducts
lacrimal puncta
lacriamal canaliculi
lacrimal sac
nasolacrimal duct |
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Term
| What actions are the EOMs capable of? |
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Definition
elevation/depression
abduction/adduction
intorsion/extrosion |
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Term
| What are the extraocular muscles? |
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Definition
levator palpebrae superioris m.
rectus mm. (4)
oblique mm. (2) |
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Term
| what are the four rectus mm and their innervation? |
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Definition
medial rectus m. oculomotor n
lateral rectus m. abducencs n
superior rectus m. oculomotor n.
inferior rectus m. oculomotor n |
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Term
| Test which isolates each EOM, permitting assessment of m and n competence. |
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Definition
| cardinal positions of gaze |
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Term
| preganglionic parasympathetic fibers of the eye synapse in the ____. |
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Definition
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Term
| postganglionic parasympathetic fibers reach the eye via the _____ to innervate the _____. |
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Definition
short ciliary nerves
sphincter pupillae and ciliary mm. |
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Term
| The lacrimal n. receives ____ autonomic fibers (para and symp) via the _____ and relays them to the lacrimal gland. |
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Definition
postsynaptic
zygomaticotemporal n. |
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Term
valveless veins corresponding to aa branches of the same name.
What are it's branches? |
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Definition
Ophthalmic vv.
superior ophthalmic v.
inferior ophthalmic v. |
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Term
| possible route fro transmission of facial infections. |
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Definition
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Term
| Name the tunics of the eye. |
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Definition
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Term
| Name the parts of the fibrous layer and its innervation. |
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Definition
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Term
| the corneal epithelium is continuous with the ___. |
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Definition
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Term
| Name the parts of the Uvea. |
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Definition
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Term
| what are the parts of the ciliary body? |
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Definition
ciliary muscle
ciliary processes
ciliary zonule |
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Term
| What are the parts of the iris? |
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Definition
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Term
| What are the pupillary mm. and thier actions? |
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Definition
sphincter pupillae: constrict pupillary aperture
Dilator pupillae: dilate pupillary aperture. |
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Term
| ciliary processes secrete ____. |
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Definition
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Term
| Name the 2 layers of the optic retina. |
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Definition
outer layer: pigment cell layer
inner layer: neural layer (rods and cones) |
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Term
| Region of greatest visual resolution. |
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Definition
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Term
| Area where there is a blind spot in the visual field. |
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Definition
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Term
| jagged line posterior to the ciliary body marking the transition from non-sensory to optic retina. |
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Definition
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Term
| Aqueuous humor circulates from ____ to ____ chamber and drains from the _____ via the _____. |
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Definition
posterior
anterior
iridiocorneal angle
scleral venous sinous (canal of Schlemm) |
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Term
| Increase in intraocular pressure due to failure of aqueous humor drainage. |
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Definition
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Term
| What contribute to the refractive media of the eye? |
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Definition
cornea
lens
aqueous humor
vitreous body |
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Term
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Definition
nearsightedness
farsightedness |
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Term
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Definition
nearsightedness
farsightedness |
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