Circulatory and Respiratory System

Circulatory and Respiratory System

The Respiratory System

is a system in the body that deals with breathing. When we breathe we take in oxygen that we need and removes carbon dioxide that we don't need.

The Respiratory System

Air enters the body through your mouth or nose. It then travels down your trachea (windpipe) which divides into two tubes called bronchi. These tubes carry air into each lung. The diaphragm is a muscle that controls breathing. This muscle becomes flat to let air into the lungs, and relaxes to push air out of the lungs.

The Circulatory System

Blood carries things like oxygen and nutrients to each cell in the body. The heart pumps blood through the body through a system of tubes called blood vessels.

The Circulatory System

Arteries are a type of blood vessel that carries oxygen-rich blood away from the heart. Veins are another type of blood vessel which carries oxygen-poor blood back to the heart.

Multiple Choice

What pumps blood through the body?

• heart

• blood vessels

• lungs

Multiple Choice

Blood vessels that carry blood away from the heart are called:

• veins

• arteries

Multiple Choice

Blood vessels that carry oxygen-poor blood back to the heart are called:

• veins

• arteries

Multiple Select

What are the functions of the circulatory system?

Select ALL that apply.

• carries oxygen and nutrients to cells

• carries waste away from cells

• works with respiratory system to provide oxygen and get rid of wastes

• removes CO2 and H2O when you exhale

Multiple Select

What are the functions of the respiratory system?

Select ALL that apply.

• provides oxygen for your cells

• removes CO2 and H2O when you exhale

• carries oxygen and nutrients

• provides shape and support for muscle

Open Ended

Where does oxygen go once it enters the lungs?

Open Ended

Why is it necessary for the respiratory and circulatory systems to work together?