Cardiovascular System

Front

The fluid that delivers oxygen, hormones, and nutrients to the cells and carries away wastes

Back

Blood

Front

The oxygen-carrying protein in blood

Back

Hemoglobin

Front

The top two chambers of the heart

Back

Atria

Front

These are between the atria and ventricles that allow blood to flow through the chambers

Back

Valves

Front

The lower two chambers of the heart

Back

Ventricles

Front

Blood vessels that return blood to the heart

Back

Veins

Front

Blood vessels that carry oxygenated blood away from the heart

Back

Arteries

Front

What is the main organ of the circulatory system?

Back

heart

Front

Veins carry oxygen poor blood back to the heart.

Back

True

Front

The heart is about the size and shape of your . . .

Back

fist