Health Test 3

There are (a)   bones in the body.

The part of the bone where red blood cells are manufactured is the (a)   .

Your (a)   forms a cage that protects your heart and lungs.

Another name for your tailbone is your (a)   .

The (a)   help you stand straight, but also allow you to bend.

Your (a)   helps protect your brain.

Light exercises that send blood flowing to your muscles are called (a)   .

Continuous exercises that help your body process large amounts of oxygen efficiently are (a)   .

The more muscles are used, the (a)   they become.

Your body needs aerobic exercises at least 20-30 minutes (a)   times each week.