1. Circulatory System

2. Transport
Moves materials (water, nutrients, hormones and wastes) through the body to the cells that need them

3. Made up of…. Cardiovascular System Heart, arteries, veins, capillaries
Blood
Red Blood Cells (RBC), White Blood Cells (WBC), plasma and platelets
Lymphatic System
Lymph

4. Heart
Muscular organ - acts as a pump that drives the circulatory system
Has four chambers
Upper chambers called atria
Lower chambers called ventricles
Arteries and Veins branch out from the heart

5. Our circulatory system is a double circulatory system.
This means it has two parts.
Lungs
The right side of the system
deals with deoxygenated (oxygen poor) blood.
The left side of the system
deals with oxygenated blood.
Body cells

6. Vessels Arteries Thick muscular walls Carry blood away from the heart
Main Artery is called the AORTA
Veins
Carry blood back to the heart
Have valves to prevent backflow
Capillaries
Very thin walls
Gases and nutrients pass from the blood into the cells
Connects the arteries and veins

7. Blood Consists of: RBC – carries O2 WBC – fight disease
Plasma – fluid of the blood, carries everything EXCEPT O2
Platelets – clot the blood
*Distributes body heat, helps maintain a steady temperature

8. Lymph Fluid in spaces between the body’s cells
Contained in the lymph nodes which filter bacteria and viruses from the lymph
Helps to protect the body against infection