The Circulatory System

The Circulatory System

BrainPopCirculatory systemHeart

1. Heart2. Lungs3. Arteries4. Veins

•Blood brings OXYGEN and NUTRIENTS to organs and muscles.

•Blood removes waste from organs and muscles.

•Waste is delivered to the kidneys, liver, and lungs.

The Circulatory System

• If your circulatory system were laid out from end to end it could go around the world twice!

• The heart pumps as much as 2,000 gallons of blood a day.

• Your heart beats around 100,000 times a day, 36500000 times a year and over a billion times if you live beyond 30. • A kitchen faucet would need to be turned on all the way

for at least 45 years to equal the amount of blood pumped by the heart in an average lifetime.

• Early Egyptians believed that the heart and other major organs had wills of their own and would move around inside the body.

Heart Facts

Circulatory SystemWrite these facts in your notebook

1. The main organ of the circulatory system is the heart.

2. The fluid that flows through the circulatory system is called blood.

3. Veins carry blood to the heart. (goes in)4. Arteries carry blood away from the heart.5. Capillaries are tiny blood vessels.

Animation of beating heart:Another animation

Animation of a Beating Heart

Blue Blood has Carbon Dioxide

Red Blood has Oxygen

Animation of a Beating Heart

Blood• Blood is always red. In veins, blood looks blue

because it is loaded with carbon dioxide wastes. • Red blood cells carry & exchange oxygen.• White blood cells fight infection.• Platelets aid in clotting blood.• Plasma is the liquid portion of the blood.• Everybody’s blood falls into one of four groups: A,

B, AB, or O. • O can receive or donate to all four types.

Brainpop:BloodBlood Pressure

Watch a movie about the heart!

Color Your HEART

Color and Label Your HEART

1A. Superior Vena Cava1B. Inferior Vena Cava2. Right Atrium3. Right Ventricle4. Pulmonary Artery5. Pulmonary Vein6. Left Atrium7. Left Ventricle8. Aorta