1. Circulatory system

2. Learning goals
I will be able to identify the structure and function of the circulatory system.
I will be able to trace the flow of blood in the heart.

3. Function Transport materials Regulate body temperature
O2, CO2, waste, vitamins, nutrients, H2O
Regulate body temperature
Includes: Blood, arteries, veins, capillaries

4. Blood Red Blood Cells White Blood Cells Plasma Platelets
Carry oxygen to all cells and carbon dioxide to lungs
White Blood Cells
Fight infections
Plasma
Liquid part of blood; mostly water
Platelets
Help to clot the blood to stop bleeding

5. Blood Vessels Arteries Veins Capillaries
Carry blood AWAY from the heart (usually oxygenated)
Walls are thicker to withstand the greater pressure
Veins
Carry blood TOWARD the heart (usually deoxygenated)
Walls are thinner because of lower pressure
One way valves
Capillaries
Tiny, thin-walled blood vessels that allow the exchange of gases, nutrients and waste
Some only fit one cell through at a time

6. Blood Vessels Oxygenated (red) Deoxygenated (blue)
All arteries except 2
Pulmonary Arteries carry blood to the lungs
Deoxygenated (blue)
All veins except 2
Pulmonary veins carry blood from the lungs to the heart

8. Arteries Arterioles Capillaries Venule Vein
Arteries to Veins
Arteries Arterioles Capillaries Venule Vein
Oxygenated blood Deoxygenated blood

9. Artery vs Vein

10. Capillaries

11. Heart Structure: 2 atria
Receive blood from body and pump to ventricles
Thin walled
2 ventricles
Pump blood to body tissues
Thick, muscular walls
Right side pumps deoxygenated blood to the lungs to get oxygenated
Left side pumps oxygenated blood to the body

12. The Heart # Label 1 Aorta 2 Superior Vena Cava 3 Pulmonary Artery 4
Pulmonary Vein 5
Right Atrium 6
Tricuspid Valve 7
Right Ventricle 8
Inferior Vena Cava 9 10 11
Left Atrium 12
Mitral Valve 13
Aortic Valve 14
Left Ventricle 15

13. Learning goals
I will be able to identify the structure and function of the circulatory system.
I will be able to trace the flow of blood in the heart.