3. Life Process of Transport  absorption -diffusion in and out of materials  circulation moving materials around

4. 3 Parts to Circulatory System  Pump(HEART)  Tubes(BLOOD VESSELS)  Fluid(BLOOD)

5. Blood Vessels – Carry 1. Artery - Carry blood Away from heart - Thick walled and elastic - Feel pulse here - (All Carry Oxygenated blood except the pulmonary artery)

6. VeINs - Carry blood (IN) Toward the heart - Contain Valves - Thinner - (All Carry Deoxygenated blood except the pulmonary vein)

8. printed

9. Capillaries - between arteries to veins - One cell thick walls (small) - Gas and nutrient exchange - **DIFFUSION**

10. ABC

11. Lymph vessels -walls one cell thick -around all body cells - Lymph is made of blood except for the absence of RBC and some plasma proteins. -chief site of material exchange with the tissues

12. The Human Heart “Pump” - Made of cardiac muscle 1. Septum: muscular wall separates Right and Left sides 2. Atrium: thin upper heart chambers receive blood 3. Ventricles: muscular thick lower chambers pump blood away from the heart 4. Valves - prevent the backward flow of blood in the heart

17. Heart - 4 Chambers The heart is double pump  1. Right Atrium – Collects blood from body  2. Right Ventricle – Thick Walled Pumps blood to lungs (pulmonary)  3. Left Atrium – Collects blood from lungs (pulmonary)  4. Left Ventricle – Pumps blood to body

18. 1. Deoxygenated blood-- low in oxygen (oxygen poor) - LEFT SIDE 2. Oxygenated blood-- high in oxygen (oxygen rich) - RIGHT SIDE

19. BLOOD FLOWS!!!!!! IN TOP TO BOTTOM THEN OUT

20. 1. Inferior & superior vena cava 2. Right atrium 3. valve 4. Right ventricle 5. valve 6. Pulmonary arteries (BLOOD TO THE LUNGS – GAS EXCHANGE) … 7. Pulmonary veins 8. Left Atrium 9. valve 10. Left ventricle 11. valve 12. Aorta

21. LABEL DIAGRAM

22. A = aorta F = left ventricle B = pulmonary arteries G = right ventricle C = pulmonary veins H = valve D = left atrium I = vena cava E = valve J = right atrium

23. Types of Circulation!!  1. Pulmonary –  2. Systemic –  3. Coronary -

24. Pacemaker - in the right atrium - initiates ** Heartbeat is stimulated by an electrochemical impulse.** PACEMAKERS!!! – give electric current to set timing of beats

25. Blood!!!!!!!!! Why do we need blood?????????

26. 1. Transports MATERIALS (needed to keep homeostasis) a. TO CELLS - Oxygen, nutrients, antibodies, hormones b. FROM CELLS – Carbon Dioxide, wastes

27. 2. Regulates body temperature. - transports heat too!!! 3. Protects-helping fight disease. - antibodies, WBC’s etc.

28. Blood Composition  Liquid Part – The Plasma 55% Antibodies, hormones, nutrients here Straw colored

29. Solid Part  Blood Cells 45% WBC, RBC, platelets

30. BLOOD CELL TYPES  1. Red Blood Cells: MAIN FUNCTION: CARRY OXYGEN contain the iron protein compound HEMOGLOBIN donut shaped made in the red bone marrow destroyed in the liver and spleen

31. ** Carbon monoxide binds to hemoglobin 40X better than Oxygen

32. 2. White Blood cells MAIN FUNCTION : FIGHTS DISEASE - makes antibodies - engulfs bacteria (eats) - largest and fewest  Humans have about one white blood cell for every 600 red blood cells.

33. White Blood Cell Types Phagocytes-- engulf bacteria and viruses PAC MAN!! Draw it Lymphocytes-- produce antibodies

34. 3. Platelets MAIN FUNCTION: Clots blood (stops bleeding) - just cell fragments

35. Clotting:  Platelets - release enzymes starts fiber formation (web) that platelets will clump to

36. CIRCULATORY SYSTEM PROBLEMS Hypertension (High Blood Pressure) - narrowing of the arteries - harder for blood to get through - increases the strain on the heart

37. Causes: 1. Diet a. salt, fats 2. cigarettes (nicotine) & caffeine 3. alcohol 4. heredity & aging No cure--may be treated by medication & diet. "Silent killer"--millions don't know they have it

38. Angina pectoris (MINOR Heart Attack) - p artial blockage(s) of coronary arteries -lack of oxygen supply to the heart muscle (chest pain into left shoulder and arm)

39. Coronary thrombosis - heart attack -Complete blockage in a coronary artery - stops circulation to part of the heart muscle -attack is fatal if too much heart muscle is involved

40. STENT  define it in box  stent animation stent animation

41. Stroke  Blocked blood vessel in the brain  Brain cells do not get oxygen and die  Leads to brain damage

43. BLOOD PROBLEMS –  Regular ANEMIA -  - Less RBC’s or non-working RBC’s - Due to a Lack of IRON  Tired!!!

44. Sickle-cell Anemia – RBC shaped like a sickle  – hereditary disease

45. LEUKEMIA  - Cancer of bone marrow - Too many WBC’s that do not work

46. MONO  - Due to a virus too many WBC’s that do not work - Fatigue varies person to person - Causes spleen to enlarge - contagious

47. HEMOPHILIA  - Platelets do not clot correctly - Usually due to a lack of enzymes needed to start clotting process