11 The Eyelids Flashcards

1
Q

The upper eyelid is _______ and more mobile than the lower. Can be raised 15mm by the levator.

The lower lid usually lies within _mm of the ________ limbus

A

LARGER

1mm. Inferior

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2
Q

The two eyelids are separated by a small triangular space called the _______ __________. In the center of this, is a small pinkish elevation called the __________ __________. A semilunar fold called the _______ semilunaris lies on the lateral side of caruncle

A

Locus lacrimalis

Caruncula lacrimalis

Plica

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3
Q

The eyelids function to:

1) cover the globe for _____________
2) move tears toward drainage at the ________ canthus on closure
3) spread the tear film over the ________ surface of the eye upon opening.
4) contain structures that produce _____ ______

A

Protection
Medial
Anterior
Tear film

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4
Q

Which layer of the eyelid is thinnest and contains no fat?

Which layer is a muscle of facial expression innervated by CN VII?
What portion of this layer is used for forced closure of the eyelids? What portion is used for spontaneous and reflex blinking (divides into muscle of Riolan and muscle of Horner)?

A

Skin layer!

Orbicularis layer
Orbital portion. Palpebral portion!

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5
Q

The muscle of ______. Is the superficial orbicularis oculi that keeps the lid margin __________. Applied to the globe during eye movements.

What line divides the lid into anterior and posterior portions and used as a surgical landmark?

A

Riolan. TIGHTLY

Gray line.

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6
Q

The muscle of ________ consists of fibers from the orbicularis that encircle canaliculi and help drain tears into lacrimal sac!

A

HORNER

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7
Q

What eyelid layer is a dense irregular layer of loose CT that serves as a barrier to the orbit in the uppper and lower lids. What’s the only thing it doesn’t protect?

Everything in front of this is considered ___ ______or anterior and anything behind is ______ ______

A

Tarsal plate
Lacrimal sac is NOT protected

Pre-ceptal . Post-ceptal

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8
Q

What’s the main retractor muscle of the upper eyelid?

Where does it originate?

What ligament (also called Whitnall’s ligament) allows for change in course of muscle from anterior/posterior to superior/inferior?

A

Superior palpebral levator muscle
Lesser wing of sphenoid

Superior transverse ligament

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9
Q

The muscle of _____ is smooth muscle that’s innervated by sympathetic nervous system. (Unique)

Originates on the ________ and extends into tarsal plate.

Very minor _________ of the eyelid- ______ the palpebral fissure.

The ________ tarsal muscle is also innervated by SNS and provides minor lower lid __________

A

Muller!

Levator

Retractor. WIDENS

Inferior. Retraction (VERY MINOR)

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10
Q

The tarsal plate contains ___________ glands that are LARGE sebaceous glands that are located posterior to eyelash follicles within tarsal plate.

Each consist of 10-15 acini attached to large central duct. Produce anterior lipid layer of tear film

A

Meibomian

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11
Q

The _____________ conjunctiva is the inner lining of the eyelids that contains two layers.

The epithelial layer which is a protective layer that contains ______ cells that produce mucin layer of tear film!

2nd is the ______ with a superficial lymphoid layer and a deep fibrous layer

A

Palpebral.

GOBLET

Stroma

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12
Q

The ____ glands are composed of just one or two acini and are associated with the eyelash follicle. 1-2 per follicle. Lubricate eyelashes to prevent them from becoming brittle

A

Zeis

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13
Q

The ____ glands are modified apocrine glands which are located near eyelash follicle. Empty their contents onto eyelash follicles, Zeis glands, and lid margin

A

MOLL

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14
Q

The glands of ______ are accessory lacrimal glands that are located in the cornices.

The glands of _______ are accessory lacrimal glands that are larger than the glands of _______. Located in tarsal conjunctiva.

A

Krause (KRAUSE in the CREASES)

Wolfring

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15
Q

The voluntary motor innervation of the eyelid involves the ____________ branch of facial nerve; which innervates orbicularis oculi

Involuntary motor uses the ___________ nervous system, innervates muscle of ______.

A

Zygomatic

Sympathetic. Muller

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16
Q

Sensory of ________ eyelid is innervated by the frontal and lacrimal branches of V1 (ophthalmic nerve)

Sensory of _______ eyelid is innervated by the infraorbital and zygomaticalfavcial branches of V2 (maxillary)

A

upper

Lower

Upper V1….lower v2!

17
Q

The lateral and medial palpebral arteries are branches of the ophthalmic arter that supply the deeper eyelid tissue, what branches supply them??

The facial artery branches off what to provide circulation to the superficial areas of the eyelid?

A

Internal carotid

External carotid

18
Q

Drainage of most of the upper eyelid and lateral half of lower eyelid is the the ______________ lymph nodes.

Drainage of the medial portion of the upper eyelid and the medial portion of the upper and lower lids drain into the ____________ nodes by way of vessels that follow angular and facial vessels.

A

Pre auricular

Submandibular