Human Body Systems

Front

This level is made of many cells working together

Back

Tissue

Front

Different organs working together make ...

Back

Organ Systems

Front

The circulatory system...

Back

All of these are true

Front

The smallest living part of the body is...

Back

cells

Front

How do messages travel through the nervous system?

Back

through electrical signals in the nerves

Front

How does food move through the digestive system?

Back

mouth, esophagus, stomach, intestines

Front

Why is the heart in the circulatory system so important?

Back

It pumps the blood around the body.

Front

The __________ system is in charge of getting oxygen into the body

Back

Respiratory

Front

The circulatory and respiratory systems work together to move ______ around the body.

Back

Oxygen

Front

Muscles are attached to _____ to help you ______.

Back

bones, move