Bones

Question 1

What are the 5 types of bones?

Answer 1

Long bones - support weight of body, facilitate movement appendicular skeleton
Sesamoid bones - imbedded in tendons, used to protect tendons (hands, feet, knees)
Irregular bones - vary in shape and structure (pelvis, spine)
Flat bones - large area for muscle attachment, protection (cranium, sternum)
Short bones - provide stability, allow movement (wrist and ankle joint)

Question 2

What are the bones function?

Answer 2

Support
Protection
Movement
Production of blood cells
Storage of minerals
Endocrine regulation

Question 3

What are the 2 types of bone?

Answer 3

Compact bone - dense and tough (80% of bone body mass)
Cancellous/spongy bone - light and strong

Question 4

What are the 3 types of bone cells?

Answer 4

Osteoblasts
Osteoclasts
Osteocytes

Question 5

Osteoblasts

Answer 5

Bone forming cells, found at sites where bones are growing (site of a fracture/creating new bone)

Question 6

Osteoclasts

Answer 6

Break down, found at similar places to osteoblasts

Question 7

Osteocytes

Answer 7

Mature bone cells located deep within mineralised bone, sensitive to mechanical strain, communicate with osteoblasts/clasts (surface).

They monitor and maintain bone tissue

Question 8

Osteogenesis

Answer 8

Development of bone tissue. Bone tissue starts as cartilage. Development of long bones - osteoblasts secretes osteoid, replaces cartilage model