Bone Physiology Flashcards Preview

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Flashcards in Bone Physiology Deck (72):
0

Long bone ends

Epiphysis

1

Bone cavity

Medullary cavity

2

Bone-forming cell

Osteoblasts

3

Precedes bone tissue on a long bone

Hyaline cartilage

4

Canals deep into the bone

Perforating and central

5

Tightly packed bone

Compact bone

6

Bone shaft

Diaphysis

7

Isolated bone cell

Osteocyte

8

Spongy bone

Cancellous bone

9

Tiny channels that radiate through the bone matrix

Canculicli

10

Outer covering of bone

Periosteum

11

Bone unit

Osteon

12

Chambers around each bone cell

Progenitor

13

Bone-eroding cell

Osteoclast

14

Bone matrix composed of this

Hydroxyapatite

15

Covering at ends of long bone

Hyaline cart

16

Lining of marrow cavity

Endosteum

17

Rings within a single bone unit

Concentric

18

Rings between bone units

Interstitial

19

Area of bone growth

Epiphyseal plate

20

Clast

Breakdowns

21

Blast

Makes

22

Cyte

Maintains

23

Hydroxyapatite

Ground substance in bone

24

Osteoid

G.s with calcium

25

Primary ossification center location

Diaphysis

26

2ndary ossification center

Ends of the bone

27

Remodeling

Restructuring

28

Osteolysis

Bone destroying

29

Osteogenesis

Bone making

30

Myosotis ossification a

Skeletal muscle turns to bone

31

Acromegaly

G.H. Released after puberty stops

32

Osteomalacia

Tickets, lack of vitamin D and calcium in diet

33

Osteogenesis imperfectca

Your collagen is not bundled and their in chaos. Fragile bones

34

Marian's syndrome

Extra wide epi plates

35

Achondroplasia

Slow growth of epidural cartilage

36

Osteoporosis

Deals with estrogen

37

Why don't toddlers break more bones, given the fact that they are falling constantly?

They still have growth plate

38

Why does applying a heavy plaster cast help a bone to heal faster

Applying weight to the bone stimulates calcium release

39

Increased fibroblast activity

Scurvy

40

Decreased chondroblast activity

Osteoarthritis

41

Increased hormone levels

Gigantism

42

Decreased hormone levels

Pituitary dwarf

43

Osteoporgenitor

Leg river mesenchymal cell that hang around your Skelton

44

Where are the osteoprogenitors located

Periosteum endosteum

45

Osteoblast

Actively makes fibers and matrix

46

Osteoid

Organics before calcium deposits

47

Osteocytes

Mature bone and maintains matrix, monitoring protein and mineral content. Cannot divide.

48

What space so osteocytes occupy

Lacunae

49

Progenitor divides

Lamellae

50

Canaliculi

Tiny extensions of cytoplasm that are used as passage ways to get nutrients from the central canal to the cells

51

Osteoclast

Breaks down bone matrix

52

Osteolysis

Acids and enzymes dissolve bone matrix

53

Central canal

Capillary and venuele, parallel to bone surface

54

Perforating canal

Perpendicular to bone surface, feeds marrow and deep osteocytes

55

Lamellae

Matrix layer

56

3 varties of lamellae

Concentric
Interstitial
Circumferential

57

Cancellous bone

No patrons instead has trabeculae

58

Outer fibrous layer-

dense irregular c.t., some of the collagen fibers weave into the bone itself, sharpeys fibers

59

Inner cellular later

Elastic fibers and osteoclasts

60

Periosteum functions

Isolated bone from whatever's around it
provides an easy route for vessels and nerves
Important in growth and repair

61

Endosteum

Lines marrow cavity and lines canal, covers trabeculae, matrix exposed

62

Intramembranous ossification

Bone from mesenchymal makes dermal bones

63

Dermal bones

Flat bones of skull, mandjble, clavicle, plus

64

Ectopic/heterotrophic bones

Form in areas of high tension

65

Endochondral O

Bone from cartilage. More common

66

Appositional growth

Width matrix layers added to outside of bone shaft

67

Interstitial

Length, Epiphyseal plate at metaphysics made of cartilage

68

What happens when bone growth outpaced cartilage growth?

The Epiphyseal plate turns into the Epiphyseal line, no more interstitial growth can occur

69

Excessive effects on bone

Weight bearing excercjses causes muscles and tendons to grow in size

70

Parathyroid hormone

Increase osteoclasts activity
Elevates calcium levels in body fluids

71

Calcitonin

Decreased osteoclasts activity, reduces calcium in the body