Your respiratory system delivers ______ to your body.

The heart is a muscular organ that _______________.

The body has ___ bones.

The bones in your body could not move without ________.

What does the digestive system do?

What two places does air enter your body.

When chambers in your heart relax, they __________.

The skeletal system ________ your body.

Muscles are organs that ________ and _________.

Digestion begins in the ________.

What is the main organism of the respiratory system?

What do arteries do?

The skeletal system also gives it ______.

The three kinds of muscles are ________, _______, and ________.

Your _______, in your mouth chemically breaks down the food.

What does oxygen flow through after entering your body?

What does this system do?

Bones are made up of _______ ________.

Muscles need ______ to perform their tasks.

Your ______ digests certain foods.

A muscle below the lungs which pushes air in and out of your lungs is called ______.

Your circulatory system includes _______, ________, and ________.

The contain minerals like ________.

Skin _____ to cool you off.

Most digestion takes place in the ___________ ____________.