Skeleton And Muscles

Question 1

What are the four functions of the skeleton?

Answer 1

Protection, shape, movement and blood and cell production

Question 2

Name the three main types of joint:

Answer 2

Hinge joint, ball joint and socket joint

Question 3

How do antagonistic muscles work?

Answer 3

One muscle of the pair contracts to move the body part, the other muscle in the pair then contracts to return the body part back to the original position. E.g when you do a bicep curl, the biceps contract whilst the triceps relax, allowing the biceps to move