Health Test 3

There are ______ bones in the body.

The part of the bone where red blood cells are manufactured is the __.

Your ____ forms a cage that protects your heart and lungs.

Another name for your tailbone is your ____.

The _____ help you stand straight, but also allow you to bend.

Your ____ helps protect your brain.

Light exercises that send blood flowing to your muscles are called ___.

Continuous exercises that help your body process large amounts of oxygen efficiently are ___.

The more muscles are used, the ___ they become.

Your body needs aerobic exercises at least 20-30 minutes ___ times each week.