Which system controls all movement in the body?

Which system changes food into a form that can be used in the body?

Which system brings in oxygen for the body to use and takes away carbon dioxide?

Which system carries materials, like food and oxygen, to the cells in the body?

Which system receives and carries messages to control the body?

Which is NOT a purpose of the stomach?

The ______ filters harmful substances.

What are the main organs of the respiratory system?

The process of breathing is called _______.

The two branches of the trachea that connect to each lung are called the ______.

The ______ protects the brain.

Which is NOT a component of the skeletal system?

The _________ skeleton consists of the skull, spine, and ribs.

Muscles are connect to bones by __________.

Which is NOT a type of muscle?

The ________ are the smallest blood vessels in your body.

The _________ is the body's main and largest artery.

Your ______ have valves to keep your blood flowing in one direction.

The longest bone in the human body is the _______.

The main organ of the circulatory system is the ______.

______ carry blood away from the heart.

_____ carry blood back to the heart.

The most important organ of the human body is the _______.