1. February 17 th 2016 Learning Target I will continue to work to identify the function of the circulatory system by viewing models and animations I will continue to work to identify the function of the circulatory system by viewing models and animations WHY? So I can dig deeper into the human body WHY? So I can dig deeper into the human body Warm up In your opinion: What do you think the “lub dub” is in your heartbeat? Do you think blood can move away in veins and towards the body in arteries? What do you think would happen if we didn’t have veins or arteries? In your opinion: What do you think the “lub dub” is in your heartbeat? Do you think blood can move away in veins and towards the body in arteries? What do you think would happen if we didn’t have veins or arteries?

2. Cardiovascular System

3. Cardio = “heart” Cardio = “heart” Vascular = “vessels” Vascular = “vessels”

4. Circulatory ( Cardiovascular) System Made up of heart, vessels, and blood Made up of heart, vessels, and blood

5. Three Types of Blood Vessels Arteries - move Arteries - move blood away from the heart

6. Three Types of Blood Vessels Arteries - move blood Arteries - move blood away from the heart Veins - move blood Veins - move blood toward the heart

7. Three Types of Blood Vessels Arteries - move blood away from the heart Arteries - move blood away from the heart Veins - move blood toward the heart Veins - move blood toward the heart Capillaries - Capillaries - microscopic blood vessels that connect arteries and veins

8. Functions of the Blood Carries oxygen from lungs to all body cells and removes carbon dioxide from the cells Carries oxygen from lungs to all body cells and removes carbon dioxide from the cells Red blood cell White blood cell

9. Functions of the Blood Red blood cells – contain hemoglobin which combines with oxygen. These cells deliver oxygen to the body. Their disc shape helps them squeeze through vessels. They wear out and are replaced every four months. New red blood cells are produced in the bone marrow. Red blood cell

10. Functions of the Blood Carries waste products of cell activity to the kidneys to be removed from the body Carries waste products of cell activity to the kidneys to be removed from the body

11. Functions of the Blood Transports nutrients from the digestive system to body cells Transports nutrients from the digestive system to body cells

12. Functions of the Blood Materials in the blood help fight infection and heal wounds (white blood cells and platelets). Materials in the blood help fight infection and heal wounds (white blood cells and platelets). White blood cell: fights foreign invaders Platelets: help blood form clots

13. Functions of the Blood White blood cells – are generally larger than red blood cells. They can move out of your blood through the capillary walls into tissue fluid and lymph. They then travel around fighting disease. The white blood cells last 13–20 days, after which they are destroyed by the lymphatic system. White blood cell: fights foreign invaders

14. Functions of the Blood Platelets – are irregularly-shaped, colorless bodies that wear out within 5–10 days Their sticky surface lets them, along with calcium, vitamin K, and fibrinogen, form clots to stop bleeding. Platelets: help blood form clots

15. Which two substances does the blood transport away from body cells? 1. Oxygen & carbon dioxide 2. Carbon dioxide & waste 3. Nutrients & waste 4. Oxygen & nutrients

16. What parts of the blood help fight off disease and heal injuries? 1. White blood cells & platelets 2. Red blood cells & platelets 3. White blood cells & red blood cells 4. White blood cells & plasma

17. Which is not a function of the circulatory system? 1. Carry nutrients & oxygen to body cells 2. Carry carbon dioxide & waste away from body cells 3. Attack disease-causing bacteria 4. Produce chemicals that control body processes