Circulatory System!

Functions

Arteries

Arteries: carry blood under high pressure away from your heart

Veins

Veins: They prevent the blood from flowing backwards. They carry blood to the heart

Capillaries

• Capillaries: they carry materials such as oxygen and nutrients to the cells and remove wastes such as carbon dioxide

Heart

Heart: Muscular organ that pumps blood around the body through the circulatory system

Main Components of Blood

Plasma

Plasma: Plasma is a straw-coloured liquid and consists mostly of water. Many of the substances carried in the blood are dissolved in plasma

Blood Cells

• Red Blood Cells: Red Blood Cells carry oxygen around the body

• White Blood Cells: Involved in fighting a disease

Platelets

Platelets help blood to clot if a blood vessel is cut. It seals it up so germs cannot get in

Functions of the Blood

• To carry nutrients such as glucose• To carry wastes such as carbon dioxide • To carry oxygen around the body• To fight disease• To clot when there is a cut so the cut is sealed