Bone Growth Flashcards

1
Q

interstitial bone growth

A

increase in length

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2
Q

appositional bone growth

A

increase in thickness

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3
Q
A
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4
Q

epiphyseal plate

A

growth plate in kids

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5
Q

metaphysis

A

growth plate in adult that has become bone

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6
Q

zone of resting cartilage

A

cartilage that has anchored to the epiphysis

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7
Q

zone of proliferative cartilage

A

chondrocyte begin to stack on top of one another increasing length of bone

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8
Q

zone of hypertrophic cartilage

A

chondrocytes getting bigger

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9
Q

zone of calcified cartilage

A

matrix calcifies
chondrocytes die

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10
Q

what happens to calcified cartilage

A

osteogenic cells will become osteoblasts and replace missing cartilage with bone

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11
Q

factors that affect bone growth

A
  1. dietary factors
  2. hormones
  3. abnormalities
  4. bone remodeling
  5. fractures
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12
Q

insulin like growth factor

A

human growth hormone produced by the pancreas

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13
Q

human growth hormone

A

produced by the pituitary gland

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14
Q

what does estrogen do for bone growth

A

targets growth plate so cartilage hardens faster

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15
Q

what does testosterone do for bone growth

A

stimulates growth for a longer period of time

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16
Q

gigantism

A

increase of growth hormone as a child

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17
Q

dwarfism

A

decrease of growth hormone as a child

18
Q

acromegaly

A

increase of growth hormone as an adult

19
Q

closed/simple fracture

A

does not break skin

20
Q

open/complex fracture

A

breaks the skin

21
Q

comminuted fracture

A

bone fragments floating around fracture site

22
Q

impacted fracture

A

one end of bone goes into another

23
Q

greenstick fracture

A

bone bends and does not break

24
Q

pott’s fracture

A

distal end of lateral leg

25
colle's fracture
distal end of the radius wrist
26
stress fracture
microscopic fissure
27
spontaneous fracture
bone fractures without trauma
28
bone's role in calcium homeostasis
puts calcium in the bloodstream
29
parathyroid hormone
increases osteoclast activity when blood calcium levels are low
30
calcitonin
stops osteoclast activity if blood calcium levels are too high
31
where is calcium stored in the body
bones
32
what do osteoclasts do for blood calcium levels
break down collagen to release calcium into the bloodstream
33
healing a fracture
formation of a fracture hematoma
34
formation of a callus
fracture hematoma hardens fibroclasts come in and produce collagen fibers to adhere to granulation site
35
who cleans up the fracture site
phagocytes and osteoclasts
36
formation of bony callus
osteogenic cells become osteoblasts and replacr callus with spongy bone tissue
37
bone remodeling last step
spongy bone is replaced by compact bone
38
reduction
reduces fracture
39
closed reduction
manually put the bone back into place
40
open reduction
surgically put the bone back into place