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Anat: Superficial Eye & Orbital Contents
Exam 2: Lecture 6
48
Anatomy
Graduate
09/11/2013

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Term
crease in skin between upper part of eyelid & bony orbital margin
Definition
palpebral fold
Term
space between upper & lower lids
Definition
palpebral fissure
Term
vestige of a 3rd eye lid
Definition
plica semilunaris
Term
name for blockage of sebaceous & sweat glands of eye
Definition
stye
Term
epithelial cell lining formed on posterior surface of lids & anterior surface of eye (covers sclera: white portion of eye)
Definition
conjunctiva
Term
glands embedded within tarsal plates of eye; secrete sebaceous fluid which prevents lacrimal fluid from running onto face & slows evaporation of lacrimal fluid
Definition
Meibomian/tarsal glands
Term
ligament anchoring tarsal plates to maxilla; also serves as origin for orbicularis oculi M.
Definition
medial palpebral ligament
Term
ligament anchoring tarsal plates to zygomatic bone
Definition
lateral palpebral ligament
Term
contraction of this portion of orbicularis oculi M. results in *firm closure of palpebral fissure
Definition
orbital
Term
contraction of this portion of orbicularis oculi M. results in *movement of lacrimal fluid across the palpebral fissure toward lacrimal lake
Definition
palpebral
Term
contraction of this portion of orbicularis oculi M. assists in *drainage of lacrimal fluid
Definition
lacrimal (Horner's M.)
Term
orbicularis oculi M.: innervation
Definition
facial N. (CN VII)
Term
M. which elevates (retracts) upper eye lid; originates from bony orbital roof and inserts into superior eye lid & tarsal plate
Definition
levator palpebrae superioris M.
Term
levator palpebrae superioris M.: innervation
Definition
oculomotor N. (CN III)
Term
loss of CN III results in this condition
Definition
ptosis (drooping of upper eye lid)
Term
M. which elevates (retracts) upper eye lid; originates from inner surface of levator palpebrae superioris & inserts onto superior tarsal plate
Definition
superior tarsal M. (Mullers muscle)
Term
superior tarsal M. (Mullers muscle): innervation
Definition
postganglionic sympathetic fibers arising from cervical sympathetic chain (superior cervical ganglion)
Term
loss of sympathetic innervation by cervical sympathetic chain causes this syndrome, which includes ptosis in its usually observed signs
Definition
Horner's Syndrome
Term
sensory innervation to superficial eye: terminal N. branch of *V1 which passes through supraorbital foramen
Definition
supraorbital N.
Term
sensory innervation to superficial eye: terminal N. branch of *V2 which passes through infraorbital foramen
Definition
infraorbital N.
Term
arteries and veins of superficial eye: terminal branch of ophthalmic A. & V.
Definition
supraorbital A. & V.
Term
arteries and veins of superficial eye: terminal branch of maxillary A. & V.
Definition
infraorbital A. & V.
Term
arteries and veins of superficial eye: 'angular' parts of these A. & V. supply some of eye
Definition
facial A. & V.
Term
arteries and veins of superficial eye: A. & V. located on temporal region of skull; supply some of eye
Definition
superficial temporal A. & V.
Term
gland located on upper lateral region of anterior orbit; composted of 2 major parts; produces an aqueous solution of tear film; secretes lacrimal fluid onto eye surface through small ductules in fornix of upper eye lid
Definition
lacrimal gland
Term
lacrimal gland receives parasympathetic innervation from this N.
Definition
facial N. (CN VII)
Term
superficial opening to lacrimal canaliculi; located on medial margin of eye lids
Definition
lacrimal punctum
Term
small canals that join from lacrimal punctum to lacrimal sac
Definition
lacrimal canaliculi
Term
structure lies behind medial palpebral ligament; receives lacrimal fluid from lacrimal canaliculi; lacrimal portion of orbicularis oculi lies behind this
Definition
lacrimal sac
Term
M. which lies posterior to lacrimal sac & assists in creating a vacuum to drain lacrimal lake
Definition
pars lacrimalis M.
Term
structure which passes inferiorly from lacrimal sac & terminates by opening into nasal cavity
Definition
nasal lacrimal duct
Term
CN III, CN IV, CN V1, CN VI, & superior ophthalmic V. exit skull through this structure
Definition
superior orbital fissure
Term
CN II & ophthalmic A. (branch of internal carotid) exit skull through this structure
Definition
optic canal
Term
which extraocular M.s of the orbit do NOT originate from annular tendon (2)
Definition
levator palpebrae superioris M.
inferior oblique M.
Term
M. in eye formed from smooth M. & receive autonomic innervation (3)
Definition
ciliary M.
dilator pupillae M.
pupillary sphincter M.
Term
sensory N. which bifurcates into supraorbital N & supratrochlear N.; located near midline in orbit
Definition
frontal N. (branch of V1)
Term
sensory N. branch of V1 which is located laterally in the orbit
Definition
lacrimal N.
Term
sensory N. which gives rise to posterior & anterior ethmoidal N. branches; ends superficially as infratrochlear N.; located medially in orbit
Definition
nasocilliary N. (branch of V1)
Term
motor N. of orbit which supplies all extraocular musculars EXCEPT the lateral rectus M. & superior oblique M.
Definition
oculomotor N. (CN III)
Term
motor N. supplying superior oblique M. of orbit
Definition
trochlear N. (CN IV)
Term
motor N. supplying lateral rectus M. of orbit
Definition
abducens N. (CN IV)
Term
ciliary ganglion contains ____ cell bodies
Definition
postganglionic parasympathetic
Term
cell bodies in ciliary ganglion give rise to fibers that leave ganglion & join ciliary N.s of what larger N. for a while?
Definition
CN V1
Term
postganglionic parasympathetic fibers innervate these 2 smooth M.s
Definition
sphincter pupillae M.
ciliary M.
Term
parasympathetic NS has this effect on pupil diameter & lens
Definition
constriction
thickening of lens (for nearsightedness)
Term
sympathetic NS has this effect on pupil diameter & lens
Definition
dilation
flattening of lens (for farsightedness)
Term
prganglionic sympathetic cell bodies come from
Definition
upper thoracic levels of the spinal cord
Term
preganglionic sympathetic fibers terminate in
Definition
superior cervical ganglion
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