Skeletal system-formation and injuries

Question 1

Bone formation aka

Answer 1

Ossification

Question 2

4 basic steps to bone formation

Answer 2

1.Bone cells absorb calcium
2.Once absorbed calcium converts to Ca compounds
3.Calcium compounds cannot dissolve in water so they stay in the cells in the bone
4.Ca compounds harden and form bone

Question 3

Ossification timeline

Answer 3

Ossification begins at birth,usually completed between ages of of 18 and 25.

Question 4

Fractures

Answer 4

A fracture is a break in the bone

Question 5

Greenstick f

Answer 5

fracture break in the bone that does not go all the way through (bends the bone)

Question 6

Simple f

Answer 6

Bone breaks all the way but does not break the skin (cast is put on)

Question 7

Compound f

Answer 7

Fracture that has broken through the skin (bone may need screws and skin will be stitched)

Question 8

Dislocation

Answer 8

Bone that is moved out of place, may result in torn ligament

Question 9

Arthritis

Answer 9

inflammation of the joints,common in older people found in juvenile

Question 10

Rickets

Answer 10

occurs in children who do not get enough vitamin d in their diets,bones become soft and weak leading to extreme case of bowleg.

Question 11

3 types of bone cells

Answer 11

Osteoblasts,osteocytes,osteoclasts.

Question 12

Osteoblasts

Answer 12

manufacture bones as the skeleton grows

Question 13

osteocytes

Answer 13

created from osteoblasts which maintain bone tissue

Question 14

osteoclasts

Answer 14

large cells with nuclei tat break down unhealthy/unwanted bone