Circulatory System
Has three main parts: The blood The muscle pumping the blood – The Heart The tubes carrying the blood – Arteries, Veins, Capillaries
1.) The Blood
Responsible for clotting Part Job Red Blood Cells Carries oxygen White Blood Cells Fights infection Platelets Responsible for clotting Plasma Carries food
2. ) The Heart But THIS one Not this one
Time to label…
Pumping Heart Pumping Heart - More Detailed
If the blood vessels that supply the heart with food and oxygen get clogged…
Heart attack
3. ) The Tubes – a. Arteries Take oxygenated blood away from the heart
3.) The Tubes – b. Veins Returns deoxygenated blood to the heart.
If those little valves don’t work properly… varicose veins
Artery Vein
The Tubes – c. Capillaries The capillary wall is only one CELL thick. If it were any thicker the food and oxygen that the blood carries couldn’t get through to the cells of your body.
This is what happens when those capillaries break under the skin. A bruise.
This is what happens when those capillaries break under the skin on your neck. A hickey. Trashy things…
Basic Circulation 1 Basic Circulation 2