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Biology: HUMAN BODY.  What is this?  This is a CIRCLE.

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Presentation on theme: "Biology: HUMAN BODY.  What is this?  This is a CIRCLE."— Presentation transcript:

1 Biology: HUMAN BODY

2  What is this?

3  This is a CIRCLE

4  What is a movement around and around?

5  It is a CIRCULATION

6 What is the red liquid circulating in our body?

7  It is BLOOD

8  Why does the blood move ?

9  The HEART pumps the blood around the body.

10 HEART  The heart is a muscle in the chest.  It contracts to pump blood.

11  HEART

12  What side is left?

13  What is the other side?

14  Right.

15  Where is the bright red blood ?  (on the left or on the right ?)

16  The blood on the left side of the heart is full of oxygen.

17  The blood on the right side of the heart is without oxygen. It is dark red or purplish.

18  How many parts does the human heart have?

19  Four.

20 4: R A, L A, R V, L V

21  BLOOD CIRCULATION:

22  from the lungs

23  from the body

24  from the atrium to the ventricle

25  from the ventricle to the artery (aorta) and to the body

26  from the atrium to the ventricle

27  from the ventricle to the artery and to the lungs

28  Why does the blood move only in one direction ?

29 THERE ARE VALVES: between the atrium and ventricle and between the ventricle and artery

30 TRICUSPID VALVE BICUSPID VALVE trojcípá chlopeň dvojcípá chlopeň

31 SEMILUNAR VALVE poloměsíčitá chlopeň

32  Name 3 parts of the circulatory system.

33 1) BLOOD

34 2) HEART

35 3) VEINS, ARTERIES AND CAPILLARIES

36  Answer in pairs:  How many parts does the heart have?  Can you name them?  Where is the bright red blood?(on the left side or on the right side)  Why is this blood bright red?

37  2 atria and 2 ventricles  The left part has oxygenated blood from the lungs

38  Describe the way of blood from the lungs to aorta.

39  Why does the blood move only in one direction ?

40 cípaté poloměsíčité (atrioventricular) (aortic and chlopně pulmonary) chlopně


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