1. The circulatory system transports oxygen, nutrients, hormones and cellular waste throughout the body using the heart and blood vessels. 2. Deoxygenated blood enters the right atrium via the vena cava and is pumped to the right ventricle. It then enters the pulmonary artery and is oxygenated in the lungs before returning to the left atrium via pulmonary veins. 3. Oxygenated blood is pumped from the left ventricle through the aorta and smaller arteries to tissues, where oxygen and nutrients diffuse into cells and waste diffuses out, before returning to the heart via veins to repeat the cycle.

1. CIRCULATORY SYSTEM
1

2. F F O2 F
F F F F CO2
F
F F
2

3. F
1. F O2 F CO2
2. F
3. F
4. F F
5. F
6. F F F

4. F FF F
F F
F FF
FF
F F
F F
F F F
F F
F 4

5. F
F F F F
F
O2 F
F F F F
2 F
O2 CO2
FF 5

6. F FF F
F F
F F
F
F F
F
2
-
6

7. OPEN CIRCULARTERY SYSTEM
F F F
F F
F (Haemocoel) F
(Sinus) F F
F F F F
7

8. F
F
F F F
8

9. F F F
F (Sinus)
F
F F
9

10. OPEN CIRCULARTERY SYSTEM
F F
F F F F
F
F
F F F
( Haemocoel )
10

11. CLOSE CIRCULARTERY SYSTEM
F F F F
F
11

12. F
12

13. F
F O2
F F F F F F
F F F
F
13

14. F
F
F F F
F F
F F
F F F
F F F F
F F F F F F F
F F F
14

15. 2 F
F
F F
F
F F F
F F
F F F
15

16. F
3 F 2
F F
1 F F
F
2
F
2
F
16

17. 17

18. 18

19. F
F F
F F F F F F F
F
F F F F
F F
F F F 3 F
F F 2
F 19

20. F F
F
F 4
F F
F
20

21. F
F F
F (artery )
F ( vein ) F
F F
F F F
F F F
F F
F F F
21

22. F F
F
F F F
F
22

24. F
24

25. pulmonary artery pulmonary vein
vena cava aorta
F
artery
vein
capillry
25

26. 26

27. ( HEART VALVE )
F
F
F F
F F
F F F
F
F
Tricuspid valve F F
Bicuspid valve Mitral valve
27

28. ( HEART VALVE )
F F
F
F
F
F F F
F F
semilunar vlave
28

29. F
F F F
F F F
29

30. F
F F F
superior vena cava
F F F
F F F Inferior
vena cava F F F
F F F F
Tricuspid valve 30

31. F F F F
Pulmonary semilunar valve F Pulmonary
artery F CO2 O2 F
F Pulmonary vein F
F F F F F F Bicuspid valve
F O2 F F F
F Aortic semilunar valve F Aorta
31

32. F ( excitation )
F F F
F F
F F
F
F
F F SA node
32

33. F ( excitation )
SA node F
F -
F F F
F F
F F
F
F
33

34. F ( excitation )
F sinoatrial node
( SA node )
F F
F F
F F
F
F F
34

35. F ( excitation )
F F F
AV node
( antrioventricular node )
F
F
0.1 F F
F
35

36. F ( excitation )
F
F F F
F AV
node 2
F
F 36

37. 37

38. 38

39. 39

40. F
( systole ) ( Diastole )
F ( cardiac cycle )
F Cardiac output F
F F
arteriole F F
F F
120/80
40

41. 41

42. F
F F
F F
3
F
F
42

43. F
1 F Artery F
F F F Arota F Artery
Arteriole F
2. F Vein F F F
Vena cava F Vein Venules
3. F Capillary F F
F F Arteriole Venules
43

44. 44

45. 45

46. F F
46

47. F
F
F F
F F
F
F F
F F
F
47

48. F
48

49. F
F
F -
F
49

50. F F F
F
F Ca+
K
50

51. F
F
F
51

52. 2+
Ca
K
52