Bones

Question 1

5 steps that bones do?

Answer 1

support, protect, mineral deposit (calcium, phosphorous), blood production (hemiopoiesis; bone marrow - making RBC), triglyceride storage (holds fat deposit inside bone, adipose: yellow marrow/develops with age

Question 2

Long bone

Answer 2

longer than wider; ex: femur, ulna, radius

Question 3

short bone

Answer 3

ex: carpals (wrist bone), tarsal (ankle)

Question 4

irregular

Answer 4

odd balls; ex: vertebrae, sacrum

Question 5

flat bones

Answer 5

ex: sternum, ribs

Question 6

sesamoid

Answer 6

formed out of tendons; ex: patella (kneecap), found in wrist/ankle

Question 7

Periosteum

Answer 7

made up of connective tissue; allow for bone to grow in thickness

Question 8

osteogenic cells

Answer 8

stem cells; ability to change into any type of cell; only bone cells that undergo cell division; found in periosteum, endosteum + in bone canals where there is blood

Question 9

osteoblasts

Answer 9

bone building cells; secrete collagen fiber, mineral salts (calcium, phosphorous); start calcification (bone hardening)

Question 10

osteocyte

Answer 10

mature bone cells; maintain bone integrity; take in nutrients + get rid of wastes via cell membrane

Question 11

osteoclast

Answer 11

formed from 50+ white blood cells; ability to secrete enzymes that help bone remodeling; found in endosteum; tears bone down

Question 12

Compact bone

Answer 12

basic unit of osteons (rods); heavy bone type

Question 13

Spongy bone

Answer 13

lighter; made up of trabeculae

Question 14

Interstitial lamellae

Answer 14

fragments of old bone