Bones Flashcards

1
Q

perichondrium

A

Dense irregular connective tissue surrounds cartilage nutrients

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2
Q

7 bone functions

A
Architectural support
Protection 
Movement
Mineral “bank” calcium and phosphate
Blood cell formation 
Fat storage
Hormone (osteocalcin) production
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3
Q

sesamoid bones

A

form within tendons (patella)

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4
Q

Mitotically active stem cell; one daughter cell remains a stem cell, while the other becomes an osteoblast or bone lining cell

A

osteogenic cell

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5
Q

check picture in notes of lamellae and everything

A

yes

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6
Q

Lamallae

A

Group of hollow tubes

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7
Q

central (haversian) canal

A

blood vessels and nerve fibers

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8
Q

perforating (Volkmann’s) canal

A

Bring blood vessels and nerves to marrow (medullary) cavity

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9
Q

osteocytes

A

in lacunae
Lacunae connected by canaliculi, connects them to central canal
Canaliculi allow (1) osteocytes to communicate and (2) diffusion of nutrients and wastes

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10
Q

endochondral ossification

A

baby’s bones cartilage to bones

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11
Q

intramembranous ossification

A

baby’s skull fuses

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12
Q

bone deposition osteoblasts produce

A

osteoid seam (unmineralized bone matrix)

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13
Q

Wolff’s law

A

Bone grows or remodels in response to demands (stress) placed on it

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14
Q

nondisplaced fracture

A

Bone ends retain normal position

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15
Q

displaced fracture

A

out of normal position

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16
Q

complete fracture

A

bone broken through entirely

17
Q

incomplete fracture

A

bone not broken through entirely

18
Q

compound (open)

A

penetrates skin

19
Q

simple (closed)

A

does not penetrate skin

20
Q

comminuted

A

3 or more pieces

21
Q

compression

A

bone is crushed

22
Q

epiphyseal fracture

A

along epiphyseal plate

23
Q

depression

A

skull pressed inward

24
Q

rickets

A

caused by insufficient calcification of bone

25
Q

Resorption outpaces deposition

A

osteoperosis