The Circulatory

System

3 Main Functions

1.Transport Oxygen from lungs

2.Transport Carbon Dioxide to lungs

3.Carry nutrients to body

3 Main Parts

1.The Heart

2.Blood Vessels

3.Blood

Blood Vessels

1.Arteries: Carry oxygenated blood to heart

and body

2.Veins: Carry deoxygenated blood to the

heart and lungs

3.Capillaries: Connect arteries with veins

Pathway of Blood

Superior & Inferior

Vena CavaRight Atrium Right Ventricle

Pathway of Blood

Pulmonary Artery LUNGS Pulmonary

Vein

Pathway of Blood

Left Atrium Left Ventricle Aorta

Heart Animation 1

Heart Animation 2

Components of Blood

Components of Blood

• 55% is made of liquid called PLASMA

• 45% is made of solids

• Red Blood Cells

• White Blood Cells

• Platelets

Red Blood Cells

• Carry Oxygen and nutrients to the body

White Blood Cells

• Fight foreign bodies and invaders

Platelets

• Allow blood to clot when the body is

cut/injured