Chapter 2

Question 1

3 main types of muscle

Answer 1

skeletal, cardiac, smooth

Question 2

muscle contraction sequence

Answer 2

1) message sent as action potential along a nerve to the muscle; 2) chemical messengers leave the nerve and communicate with the membrane of the muscle cell; 3) chemicals stimulate contraction of myofilaments within the muscle cell (sliding filament theory)

Question 3

What are bone cells called?

Answer 3

osteocytes

Question 4

3 physiological functions of bones

Answer 4

1) body support; 2) mineral balance; 3) blood cell formation

Question 5

What is the difference between tendons and ligaments?

Answer 5

Tendons connect muscles to bones, whereas ligaments connect bones to bones.

Question 6

What are bursa?

Answer 6

Fluid filled sacs that protect tendons and ligaments from possible impact of the moving bone within the joint.

Question 7

What four components make up physical structure?

Answer 7

Bones, ligaments, tendons and muscles.

Question 8

What are the two main components of bones?

Answer 8

Calcium phosphate and collagen fibers.