NBEO Part 1 - Anatomy: Questions With Definite
Solutions
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Terms in this set (221)
Layers of the eyelid Skin
Subcutaneous areolar layer
Orbicularis layer
Submuscular areolar layer
Orbital septum
Posterior muscular system
Tarsal plate
Palpebral conjunctiva
Orbicularis muscle split into what 2 Orbital - forced closure of eyelids
portions? Palpebral - spontaneous/reflex blinking
What is another name for the muscle Pars ciliaris
of Riolan?
What is the function of the muscle of Keeps lid margin tightly applied to the globe during
Riolan? eye movements
Rotates the lashes
Where is the gray line found? The most anterior portion of the muscle of Riolan
What is the importance of the gray It is a groove located between the eyelash insertions
line? and the meibomian glands
Divides the lid into anterior and posterior portions
Surgical landmark during lid repair
Ectropion occurs due to paralysis of Orbicularis
what muscle
,What is another name for the muscle Pars lacrimalis
of Horner?
What is the function of the muscle of Encircles the canaliculi and helps drain tears into the
horner? lacrimal sac
What is the purpose of the orbital Prevents fat from falling down onto the lid margins
septum? Keeps infections localized to the anterior portion of
the eyelid, away from the orbit
Does the orbital septum protect the NO - the lacrimal sac is anterior to the attachment of
lacrimal sac from infection? the orbital septum to the posterior lacrimal crest
Where is the insertion for the levator At the superior orbital septum
aponeurosis?
What is the action of the superior Main retractor of the upper eyelid (15 mm)
palpebral levator muscle? Innervated by CN III
Innervation?
What forms the superior palpebral Insertion of the levator aponeurosis into the skin of
furrow? the upper eyelid
How is the muscle of Muller Sympathetic innervation
innervated?
What is the action of the muscle of Widens the palpebral fissure (1-3 mm)
muller? Minor retractor
Which condition results in a significant CN III palsy (15mm)
upper lid ptosis?
Which condition results in a mild Horner's syndrome (2-3mm)
upper lid ptosis? Not enough sympathetic
Which nerves are responsible for CN 3 opens
opening/closing the eye? CN 7 closes
, What kind of CT is found in the tarsal Dense irregular CT
plate?
What kind of glands are meibomian Sebaceous
glands?
What do meibomian glands do? Produce the anterior lipid layers of the tear film
How many meibomian glands are 25 glands in the upper eyelid
there and where are they found? 20 glands in the lower eyelid
Where does the lateral palpebral Whitnall's ligament
ligament attach?
What are the layers of the palpebral 1. Epithelial layer
conjunctiva? 2. Stroma
2a. Superficial lymphoid layer
2b. Deep fibrous layer
Where are goblet cells predominantly Inferonasal fornix and (temporal) bulbar conjunctiva
found?
What do goblet cells do? Produce the mucin layer of the tear film
What is another word for stroma? Submucosa
Substantia propria
What is the significance of the Very immunologically active
superficial lymphoid layer of the Contains IgA, macrophages, mast cells, PMNs, &
palpebral conjunctiva? eosinophils
Where are accessory lacrimal glands Deep fibrous layer of the palpebral conjnunctiva
found?
What are glands of Zeis? Where are Modified sebaceous glands associated with eyelash
they located? follicles
Lubricate lashes
Solutions
Save Groups
Terms in this set (221)
Layers of the eyelid Skin
Subcutaneous areolar layer
Orbicularis layer
Submuscular areolar layer
Orbital septum
Posterior muscular system
Tarsal plate
Palpebral conjunctiva
Orbicularis muscle split into what 2 Orbital - forced closure of eyelids
portions? Palpebral - spontaneous/reflex blinking
What is another name for the muscle Pars ciliaris
of Riolan?
What is the function of the muscle of Keeps lid margin tightly applied to the globe during
Riolan? eye movements
Rotates the lashes
Where is the gray line found? The most anterior portion of the muscle of Riolan
What is the importance of the gray It is a groove located between the eyelash insertions
line? and the meibomian glands
Divides the lid into anterior and posterior portions
Surgical landmark during lid repair
Ectropion occurs due to paralysis of Orbicularis
what muscle
,What is another name for the muscle Pars lacrimalis
of Horner?
What is the function of the muscle of Encircles the canaliculi and helps drain tears into the
horner? lacrimal sac
What is the purpose of the orbital Prevents fat from falling down onto the lid margins
septum? Keeps infections localized to the anterior portion of
the eyelid, away from the orbit
Does the orbital septum protect the NO - the lacrimal sac is anterior to the attachment of
lacrimal sac from infection? the orbital septum to the posterior lacrimal crest
Where is the insertion for the levator At the superior orbital septum
aponeurosis?
What is the action of the superior Main retractor of the upper eyelid (15 mm)
palpebral levator muscle? Innervated by CN III
Innervation?
What forms the superior palpebral Insertion of the levator aponeurosis into the skin of
furrow? the upper eyelid
How is the muscle of Muller Sympathetic innervation
innervated?
What is the action of the muscle of Widens the palpebral fissure (1-3 mm)
muller? Minor retractor
Which condition results in a significant CN III palsy (15mm)
upper lid ptosis?
Which condition results in a mild Horner's syndrome (2-3mm)
upper lid ptosis? Not enough sympathetic
Which nerves are responsible for CN 3 opens
opening/closing the eye? CN 7 closes
, What kind of CT is found in the tarsal Dense irregular CT
plate?
What kind of glands are meibomian Sebaceous
glands?
What do meibomian glands do? Produce the anterior lipid layers of the tear film
How many meibomian glands are 25 glands in the upper eyelid
there and where are they found? 20 glands in the lower eyelid
Where does the lateral palpebral Whitnall's ligament
ligament attach?
What are the layers of the palpebral 1. Epithelial layer
conjunctiva? 2. Stroma
2a. Superficial lymphoid layer
2b. Deep fibrous layer
Where are goblet cells predominantly Inferonasal fornix and (temporal) bulbar conjunctiva
found?
What do goblet cells do? Produce the mucin layer of the tear film
What is another word for stroma? Submucosa
Substantia propria
What is the significance of the Very immunologically active
superficial lymphoid layer of the Contains IgA, macrophages, mast cells, PMNs, &
palpebral conjunctiva? eosinophils
Where are accessory lacrimal glands Deep fibrous layer of the palpebral conjnunctiva
found?
What are glands of Zeis? Where are Modified sebaceous glands associated with eyelash
they located? follicles
Lubricate lashes
