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Histology > Oral Structures > Flashcards

Oral Structures Flashcards

1
Q

What type of membrane is the Human Oral Cavity made of?

A

Oral Mucous Membrane

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2
Q

What type of tissue is in the oral mucous membrane made of?

A

Stratified Squamous Epithelium- mostly non-keratinized

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3
Q

Which parts of the oral mucous membrane are keratinized?

A

gingiva, hard palate, and dorsal surface of the tongue

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4
Q

What are the spaces in the Human Oral Cavity?

A

Vestibule, Oral Cavity proper and Pharynx

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5
Q

Keratinized Stratified Squamous Ep. is found where on the lip?

A

External Surface

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6
Q

External Surface of Lips are made up of which type of ep and glands?

A

Keratinized Stratified Squamous Ep.

Hair & Sweat Glands

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7
Q

What zone of the lips are the red area of the lips?

A

Vermillion Zone

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8
Q

True or False;

Vermilion Zone is a transition bt. Keratinized & Non-Keratinized Ep.

A

True

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9
Q

True or False

Does the red color of the lips have minimal capillaries?

A

False; red color is from the abundant capillaries

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10
Q

What type of ep. is the Internal Structure made up of?

A

Typical Oral Mucosa

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11
Q

What are the two regions of the tooth?

A

Crown & Root

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12
Q

Enamel is made up of what?

A

99% calcium crystals; hardest substance in the body

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13
Q

True or False

Pulp Cavity contains vessels & nerves

A

True

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14
Q

Part of the pulp in the root

A

Root Canal

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15
Q

bulk of tooth that is harder than bone

A

Dentin

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16
Q

Bone layer of the root; it attaches tooth to periodontal ligament

A

Cementum

17
Q

Anchors tooth in boney socket of the jaw; continuous with gingiva (gums)

A

Periodontal Ligament

18
Q

What is made up of a film of sugar, bacteria & debris

A

Plaque

19
Q

True or False; Dentin is a hard calcified tissue & 70% dry weight

A

True

20
Q

Odontoblasts produces what?

A

Predentin (organic matrix)

21
Q

What type of Collagen does Predentin consist of?

A

Type 1

22
Q

Hardest component of the human body and richest in calcium (95% calcium salts called Hydroxyapatite)

A

Enamel

23
Q

Ameloblasts produces what?

A

Enamel

24
Q

Hydroxyapatite crystals form long, tightly packed ______ that extend the full thickness of the enamel.

A

Enamel Rods

25
Q

True or False;

Ameloblasts regenerate during eruption

A

False; degenerate

26
Q

Enamel part of the tooth can repair itself?

A

False; it cannot repair itself

27
Q

How many teeth are there and how are the divided

A 
32 permanent teeth; 
8 -> incisors (single root)
12 -> molars (2/3 roots)
8 ->premolars (2 roots)
4 -> canine (single root)

Histology (9 decks)

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