Quiz 3 - Skeletal System Intro Flashcards Preview

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Flashcards in Quiz 3 - Skeletal System Intro Deck (16):
1

skeletal system

made up of the skeleton and cartilages, ligaments and other connective tissues that stabilize them

2

Functions of bones

support
mineral and lipid storage
blood cell production
protection
leverage (for movement)

3

bone tissue

supporting connective tissue (osseous tissue)

4

composition of of bone tissue

bone matrix and bone cells

5

bone matrix

minerals, proteins, ground substance

6

minerals of bone matrix

~2/3 of bone mass is calcium phosphate which then forms hydroxyapatite

7

hydroxyapatite

crystals that enable bone to resist compression

8

proteins of bone matrix

~1/3 of bone mass; protein fibers (mainly collagen)

9

ground substance

non-collagenous proteins

10

bone cells

specialized cells within the bones

11

osteocytes

mature bone cells that maintain bone matrix

12

osteoblasts

immature bone cells that builds bone by secreting matrix compounds (become osteocytes)

13

osteoprogenitor cells

stem cells that produce osteoblasts, assist in fracture repair

14

osteoclasts

large, multinucleate cells that break down bone by secreting acids

15

yellow bone marrow

composed mostly of adipose tissue for energy storage, in the medullary cavity

16

red bone marrow

involved in blood cell production, in spongy bone