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Mclean Midterm 1 > Bone Physiology > Flashcards

Bone Physiology Flashcards

1
Q

Periosteum

A

covers bone surface

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2
Q

Perichondrium

A

covers cartilage surface (vascularized CT)

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3
Q

Bone:

A

mineralized tissue with internal blood supply

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4
Q

Cartilage:

A

elastic tissue with no internal blood supply

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5
Q

Bone marrow:

A

produces circulating blood cells including periosteoclasts

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6
Q

Osteoclasts

A

resorb bone

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7
Q

Osteoblasts

A

form bone

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8
Q

Osteoid:

A

specialized bone matrix, collagen and ground substance that is mineralizes

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9
Q

Cement substance:

A

mononuclear cells coat resorbed surface so new bone can attach

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10
Q

Bone turnover:

A

resorbed cavity refilled/replaced with new bone

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11
Q

Malocclusion

A

abnormal bite

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12
Q

Hyaline cartilage vs. fibrocartilage:

A

Hyaline: relatively translucent matrix
Fibrocartilage: tough, fibrous tissue matrix with no growth potential and produced by compressively loaded periosteum – load-bearing

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13
Q

Explain how bone and cartilage grows

A

Cartilage goes interstitially and appositionally while bone only grows appositionally

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14
Q

Chemical formula of hydroxyapatite:

A

Ca10(PO4)6(OH)2

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15
Q

Why dentists should study bone physiology:

A

Teeth and bones are related mineralized structures
Bone support dentition
Tooth loss is due to mineralized tissue diseases
Most disease is an aberration of physiology

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16
Q

Uniqueness of the temporomandibular joint (TMJ):

A

Only joint capable of structural adaptation and regeneration
Joint with bilateral mobility
Has articular periosteum

17
Q

Explain how mechanical loading of the jaws dictates facial form

A

Increase loading of jaws causes short, wide faces with a founded Md plane
Decreased loading of jaws cause narrow long face and steep Md plane

18
Q

Etiology of malocclusion

A

Primarily environmental

Mclean Midterm 1 (14 decks)

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