The System that contains the heart, arteries and blood vessels is the...

Food travels down the __________ into the stomach.

Food leaves the stomach and travels to the ___________.

Waste foods are separated from solids and liquids in the __________________.

During the digestion process _________ are absorbed into the blood.

What are the main organs of gas exchange in the respiratory system?

Reaction in which glucose combines with oxygen to produce energy.

glucose + ____________ = carbon dioxide + water + energy

Tiny spaces inside the lungs, where oxygen diffuses into the blood.

Waste product of the respiration process.

A fit person has a circulatory system that can get oxygen and glucose to the muscles __________ .

Regular exercise and __________ will help you to keep fit.