NBEO Part 1: Ocular Anatomy Exam | Questions
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Terms in this set (111)
eyelid 1. skin
-thinnest in the body, no fat
-glands
2. subcutaneous areolar - CT
3. orbicularis - orbital/palpebral
4. orbital septum
5. posterior muscular system - superior levator
palpebrae, tarsal muscle of Muller
6. tarsal plate - CT
7. palpebral conj
orbital septum barrier, keeps infection out of orbit
-continuous with periorbita and periosteum of skull
-attaches to posterior lacrimal crest (doesn't
protect lacrimal sac)
obicularis obicularis oculi
1. orbital portion - forced blink
2. palpebral portion - reflex
-muscle of riolan (pars ciliaris) - lid margin on
globe
-muscle of horner (pars lacrimalis) - canaliculi,
drain
,superior palpebral levator main retractor
originates - lesser wing of sphenoid
-Whitnall's ligament - fulcrum
-levator aponeurosis
muscle of muller smooth muscle - sympathetic
palpebral conj 1. epithelial -stratified epi
-goblet cells (innermost layer of tear film)
2. stroma/submucosa/substantia propia
-immunologically active
-accessory lacrimal glands
glands of eyelid 1. zeis - sebaceous, eyelash follicles
2. moll - sweat, lid margin
3. krause - accessory lacrimal, fornices
4. wolfring - accessory lacrimal, tarsal conj
holocrine glands meibomian gland
whole cell shed into lumen
apocrine glands Moll, goblet
portion of plasma membrane buds off and enters
lumen for secretion
merocrine glands accessory lacrimal glands
secerete by exocytosis
nerves of eyelid 1. voluntary motor - zygomatic branch of facial
(obicularis)
2. involuntary motor - sympathetic (muller)
3. sensory - trigeminal
, arterial supply to eyelids 1. internal carotid - palpebral arcades (ophthalmic
and lacrimal artery)
-marginal palpebral arcades - eyelid margin
-peripheral palpebral arcades - fornices
2. external carotid
-facial branch
conj lymphatics 1. lateral - drain into parotid nodes
2. medial - drain into submandibular nodes
eyebrows CN 7
1. frontalis - scalp to sup orbital rim, raise
2. corrugator - medial edge of eyebrown down
and in
3. procerus - bridge of nose to between eyebrows,
down
4. obicularis oculi - lateral depressor
lacrimal system 1. lacrimal gland
2. accessory lacrimal gland
*acute dacryoadenitis
nasolacrimal drainage system 1. lacrimal puncta
2. canaliculi - 2mm vertical, 8mm horizontal
-muscle of horner
3. lacrimal sac - maxillary and lacrimal bones, in
front of septum
4. nasolacrimal duct - 15mm, adjacent to maxillary
sinus, terminates at inferior meatus
5. valve of hasner
*dacryocystitis
and Answers | Verified Solutions | 2026 Edition |
Pass Guaranteed
Save
Terms in this set (111)
eyelid 1. skin
-thinnest in the body, no fat
-glands
2. subcutaneous areolar - CT
3. orbicularis - orbital/palpebral
4. orbital septum
5. posterior muscular system - superior levator
palpebrae, tarsal muscle of Muller
6. tarsal plate - CT
7. palpebral conj
orbital septum barrier, keeps infection out of orbit
-continuous with periorbita and periosteum of skull
-attaches to posterior lacrimal crest (doesn't
protect lacrimal sac)
obicularis obicularis oculi
1. orbital portion - forced blink
2. palpebral portion - reflex
-muscle of riolan (pars ciliaris) - lid margin on
globe
-muscle of horner (pars lacrimalis) - canaliculi,
drain
,superior palpebral levator main retractor
originates - lesser wing of sphenoid
-Whitnall's ligament - fulcrum
-levator aponeurosis
muscle of muller smooth muscle - sympathetic
palpebral conj 1. epithelial -stratified epi
-goblet cells (innermost layer of tear film)
2. stroma/submucosa/substantia propia
-immunologically active
-accessory lacrimal glands
glands of eyelid 1. zeis - sebaceous, eyelash follicles
2. moll - sweat, lid margin
3. krause - accessory lacrimal, fornices
4. wolfring - accessory lacrimal, tarsal conj
holocrine glands meibomian gland
whole cell shed into lumen
apocrine glands Moll, goblet
portion of plasma membrane buds off and enters
lumen for secretion
merocrine glands accessory lacrimal glands
secerete by exocytosis
nerves of eyelid 1. voluntary motor - zygomatic branch of facial
(obicularis)
2. involuntary motor - sympathetic (muller)
3. sensory - trigeminal
, arterial supply to eyelids 1. internal carotid - palpebral arcades (ophthalmic
and lacrimal artery)
-marginal palpebral arcades - eyelid margin
-peripheral palpebral arcades - fornices
2. external carotid
-facial branch
conj lymphatics 1. lateral - drain into parotid nodes
2. medial - drain into submandibular nodes
eyebrows CN 7
1. frontalis - scalp to sup orbital rim, raise
2. corrugator - medial edge of eyebrown down
and in
3. procerus - bridge of nose to between eyebrows,
down
4. obicularis oculi - lateral depressor
lacrimal system 1. lacrimal gland
2. accessory lacrimal gland
*acute dacryoadenitis
nasolacrimal drainage system 1. lacrimal puncta
2. canaliculi - 2mm vertical, 8mm horizontal
-muscle of horner
3. lacrimal sac - maxillary and lacrimal bones, in
front of septum
4. nasolacrimal duct - 15mm, adjacent to maxillary
sinus, terminates at inferior meatus
5. valve of hasner
*dacryocystitis
