1. Aim: How does the human circulatory system function to maintain body homeostasis? DO NOW Directions: State whether the following quotes are true or false & explain why. 1.“The heart pumps oxygen to the brain” 2.“Oxygen diffuses into and out of the heart”

2. Circulatory System Includes: blood, blood vessels & heart Function: to transport dissolved material (glucose, oxygen, amino acids) to all parts of the body & carry and take away wastes & carbon dioxide

3. Blood Liquid medium inside our body Transports nutrients, gases, hormones, antibodies Regulates temperature Consists of: red blood cells, white blood cells, platelets, plasma

4. Red Blood Cells Transport oxygen & carbon dioxide On surface: hemoglobin protein Concave shape

5. White Blood Cells Fight disease in the body (defenders) Make antibodies Many different types

6. Platelets Involved in blood clotting helps healing

7. Plasma Liquid part of the blood Clear, straw- colored liquid Largest component of blood

8. Blood Vessels Three types Arteries: carry oxygenated or oxygen-rich blood away from the heart – Have thick walls – Transport blood at high pressure – Pulse rate can be calculated from artery Veins: carry deoxygenated or oxygen-poor blood toward the heart – Thinner walls – Transport blood at low pressure Capillaries: smallest & connect arteries & veins – Diffusion of oxygen & carbon dioxide occurs here

9. Blood Vessels Visual

10. Heart 4 chambers 2 Upper chambers: atria (plural) 2 Lower chambers: ventricles 2 sides: left & right Right side carries oxygen-poor blood – Blood from this side will go to LUNGS to pick up oxygen Left side carries oxygen-rich blood – Blood from this side will go to BODY

11. Heart Image

13. Gas Exchange LUNGS: where gas exchange happens Diffusion occurs between capillaries & blood Oxygen enters blood & gets transported back to heart Carbon dioxide will leave blood & be exhaled out of the body

14. Blood Circulation

15. AORTA Largest artery in the body transports oxygen rich blood to BODY

16. Video http://studyjams.scholastic.com/studyjams/ja ms/science/human-body/circulatory- system.htm http://studyjams.scholastic.com/studyjams/ja ms/science/human-body/circulatory- system.htm https://www.brainpop.com/health/bodysyste ms/circulatorysystem/ https://www.brainpop.com/health/bodysyste ms/circulatorysystem/

17. Video Quiz http://studyjams.scholastic.com/studyjams/ja ms/science/human-body/circulatory- system.htm http://studyjams.scholastic.com/studyjams/ja ms/science/human-body/circulatory- system.htm

18. School-House Rock –Circulation Song https://www.youtube.com/watch?v=5tTkxYeN F9Q https://www.youtube.com/watch?v=5tTkxYeN F9Q

19. Group Activity Directions: In pairs, answer the following questions. 1.What other major body system does the circulatory system work with & how do they work together? 2.How does the human circulatory system maintain body homeostasis?

20. Individual Activity Directions: Answer the following question & submit! Q: The general pathway of blood in the body is A. heart  lungs  body  heart B. body  lungs  heart  body C. lungs  heart  lungs  body D. heart  lungs  heart  body

21. Homework Read txt. pgs. 582-589 Answer questions 1,3 & 5 on pg. 589