skeletal system

Question 1

6 Main function of the skeletal system

Answer 1

1)Support of the body
2)protección of the soft organs
3) Movement due to the attachment of the skeletal muscle
4) fat storage
5) mineral storage
6) blood cell formation

Question 2

2 principle divisions of the skeletal system

Answer 2

1-Axial- Skull, column, sternum, ribcage
2- appendicular- arms, legs, hand, feet

Question 3

compact bone

Answer 3

-Homogenous
-Found in the diaphysis & under periosteum
-dense outer layer of bones

Question 3

4 Classifications of the bone/ example

Answer 3

long- Bones are usually longer than wide (humerus and femur)
short- usually squared shape (carpals ad tarsals)
flat- flat and curved (skull and sternum)
irrregular (vertebrae and pelvis)

Question 4

Spongy bone

Answer 4

-heterogenous
- found in the ends of long bone

Question 5

osteogenic cells

Answer 5

unspecialized stem cells that develop in the osteoclablast

Question 6

Osteocytes

Answer 6

Mature bone cells

Question 7

Osteoblast

Answer 7

Bone forming cells

Question 8

Osteoclast

Answer 8

bone destroying cells

Question 9

Ossification

Answer 9

-process of bone healing
-occurs while a baby is in the womb
-hyaline cartilage becomes bone
-sutures dont ossify until after birth

Question 10

Bone Matrix

Answer 10

-85% hydroxyapatite
-10% carbon carbonate
-small amounts of Na,Mg,K,F and S
-most bone tissue if extracellular matrix