13. Skeletal Form And Function

Question 1

What are the two divisions of the skeleton?

Answer 1

Axial (skull, spinal column) and appendicular (limbs, girdle)

Question 2

How do bones function in mineral storage?

Answer 2

Outer layers of bone contain high levels of calcium and phosphorus and other minerals

Question 3

Describe the two types of bone

Answer 3

Compact - homogenous

Spongy - small needle-like, lots of open spaces

Question 4

What are the three classes of levers?

Answer 4

Class 1 - fulcrum between form and resistance - ie nodding head, spine is fulcrum
Class 2 - resistance between fulcrum and force - ie push up, feet are fulcrum, resistance is body weight, force from hands
Class 3 - force between resistance and fulcrum - ie forearm lifting a ball, elbow is fulcrum, force from bicep, resistance in hand