Quiz 3 - Skeletal System Intro

Question 1

skeletal system

Answer 1

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

Question 2

Functions of bones

Answer 2

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

Question 3

bone tissue

Answer 3

supporting connective tissue (osseous tissue)

Question 4

composition of of bone tissue

Answer 4

bone matrix and bone cells

Question 5

bone matrix

Answer 5

minerals, proteins, ground substance

Question 6

minerals of bone matrix

Answer 6

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

Question 7

hydroxyapatite

Answer 7

crystals that enable bone to resist compression

Question 8

proteins of bone matrix

Answer 8

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

Question 9

ground substance

Answer 9

non-collagenous proteins

Question 10

bone cells

Answer 10

specialized cells within the bones

Question 11

osteocytes

Answer 11

mature bone cells that maintain bone matrix

Question 12

osteoblasts

Answer 12

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

Question 13

osteoprogenitor cells

Answer 13

stem cells that produce osteoblasts, assist in fracture repair

Question 14

osteoclasts

Answer 14

large, multinucleate cells that break down bone by secreting acids

Question 15

yellow bone marrow

Answer 15

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

Question 16

red bone marrow

Answer 16

involved in blood cell production, in spongy bone