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Std. 7 th Sub. - Science 8. Circulation of blood  Blood circulation  The function of circulatory system  The structure of the circulatory system  Blood.

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Presentation on theme: "Std. 7 th Sub. - Science 8. Circulation of blood  Blood circulation  The function of circulatory system  The structure of the circulatory system  Blood."— Presentation transcript:

1 Std. 7 th Sub. - Science 8. Circulation of blood  Blood circulation  The function of circulatory system  The structure of the circulatory system  Blood donation  Blood groups  Excretion

2 Std. 7 th Sub. - Science Blood circulation-Many substances like water,oxygen, soluble food materials,and waste substances are exchanged between the parts of the body

3 Std. 7 th Sub. - Science 8. Circulation of lood Functions of circulatory system Soluble substances Oxygen Hormones Waste products

4 Std. 7 th Sub. - Science 8. Circulation of blood The structure of the circulatory system Heart-a muscular organ.

5 Arteries-carry blood from heart to different parts of the body. Veins-carry blood from different parts of the body to the heart

6 Capillaries- are the blood vessels which are as fine as hair.

7 Blood donation The action of a healthy person giving blood for use by a patient is called blood donation.

8 The person who donates blood is called donor.

9 The person who receives blood is called receiver

10 Blood Groups A,B,AB,O are the four blood groups. Universal donor-O Universal receiver-AB

11 Excretion The process of passing out waste substances from the body is called excretion. Waste substances-urea,ammonia,salts.

12 Waste products in plants- Colacosia leaves- calcium oxalate. Rubber – sap Khair-katechu Babool- gum

13 Question hour 1Define excretion. 2Name the waste products formed in plants. 3Name the parts of human circulatory system. 4Give reason-The walls of capillries are thin. 5Write a note on blood donation.

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20 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood Blood circulation The function of circulatory system The structure of the circulatory system Blood donation Blood groups Excretion

21 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

22 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

23 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

24 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

25 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

26 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

27 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

28 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

29 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

30 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

31 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

32 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

33 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

34 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

35 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

36 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

37 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

38 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

39 SppP Rayat Shikshan Sanstha, Karmveer Vidhyaprabhodhini Madhya Vibhag,Satara Std. 7 th Sub. - Science 8. Circulation of blood

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