Skeletal System

Question 1

Give 2 reasons why bone is a living tissue

Answer 1

1. Reacts to the amount of force applied by increasing/decreasing density
2. Stores calcium -resorbed and transferred to blood stream when needed

Question 2

what are bone calcium salts

Answer 2

give hardness/strength for support/protection of softer tissues

Question 3

What are the 4 cells of bones

Answer 3

1. Osteoprogenitor cell- stem cell
2. Osteoblast- immature cell responsible for bone growth
3. Osteocyte - mature cell, maintaining bone structure
4. Osteoclast - Macrophage lineage, secrete enzyme to break down bone to bring Ca2+ into blood stream