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OPT 532 > Histology of Eyelid > Flashcards

Histology of Eyelid Flashcards

1
Q

What type of gland are meibomian glands?

A

Sebaceous, holocrine

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2
Q

What is the function of the meibomian glands?

A

Produce meibum (the lipid layer of the tear film)

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3
Q

What type of gland are zeis glands?

A

Sebaceous, holocrine

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4
Q

What is the function of the zeis glands?

A

To keep the cilia supple

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5
Q

What type of gland are moll glands?

A

Specialized apocrine (sweat)

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6
Q

What is the function of the moll glands?

A

Unknown, perhaps immune defense

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7
Q

What type of gland are accessory lacrimal glands?

A

Merocrine

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8
Q

What is the function of the accessory lacrimal glands?

A

Produce aqeous layer of the tear film

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9
Q

What are the two types of accessory lacrimal glands and where is each found?

A

Krause–located near fornix; Wolfring, near the tarsal plate

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10
Q

What is a common cause of meibomian gland loss?

A

Long-term CL wear

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11
Q

An external hordeolum is caused by an infection of which gland?

A

Zeis or Moll gland

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12
Q

An internal hordeolum is caused by an infection of which gland?

A

Meibomian

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13
Q

True or false: a chalazion is caused by an infection

A

False, it is an inflammatory nodule involving the meibomian gland

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14
Q

What are the two layers of the palpebral conjunctiva?

A

Stratified columnar non-keratinized epithelium; stroma (submucosa)

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15
Q

From which cells is mucin released, and where are those cells located?

A

Goblet cells, located in the palpebral conjunctiva epithelial layer

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16
Q

What is the name for conjunctival edema?

A

Chemosis

17
Q

What is the name for increased redness of the conjunctiva?

A

Conjunctival injection

18
Q

What role does vitamin A have in terms of the conjunctiva, and what might happen if it were deficient?

A

It keeps the conjunctival epithelium healthy; without it, keratinization and conincident loss of goblet cells would occur

19
Q

What role does glycocalyx have in terms of the conjunctiva?

A

It provides wettability to the ocular surface

OPT 532 (11 decks)

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