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Doctors used to hear heart beat by keepi...

Doctors used to hear heart beat by keeping ear on the chest later on used paper tubes and later Bamboo stick What is the apparatus and who discovered id?

A

Stethoscope -Graham bell

B

Kairo scope - Rene Laennec

C

Stethoscope - Rene Laennec

D

Telephone - Graham bell

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Who coinded the name form paper/ bamboo tube to hear heart beat?

Read the passage People started trapping, posoning and killing sparrow s in large numbers.Several free fire zones were set up for shooting the sparrows. People would beat drums to scare the birds from landing, so the sparrow ere forced to keep glying until they dropped dead from fatigue. Sparrow nests were torn down, egges were broken and nesttling were killed .Non material rewardsand recoginition were offered to school, work uits and gvernment agencies in accrdance with the number of sparrows killed . Later some scientists who cut open the digestive system of deal sparrows found that three- fourth of the contents were of insects harmful for crops adn ony one fourth contained grains. The scientiffic findings showed that sparrow were basically beneficial birds for humans. Rather than being increased, crop yields after the campaign were substantially decreased. What is the reason for less yield in the fields ?

Make a paper tube 10 inch long and one inch in diameter. Keep once end of it on the chest of your friend on a pointer one inch to the lift side centre around 6 inches below from his/her neck. Keep your ear at the other end. Listen carefully and count the heart beats for a minute. What is the relationship between the heart beat and the pulse.

Read the passage People started trapping, posoning and killing sparrow s in large numbers.Several free fire zones were set up for shooting the sparrows. People would beat drums to scare the birds from landing, so the sparrow ere forced to keep glying until they dropped dead from fatigue. Sparrow nests were torn down, egges were broken and nesttling were killed .Non material rewardsand recoginition were offered to school, work uits and gvernment agencies in accrdance with the number of sparrows killed . Later some scientists who cut open the digestive system of deal sparrows found that three- fourth of the contents were of insects harmful for crops adn ony one fourth contained grains. The scientiffic findings showed that sparrow were basically beneficial birds for humans. Rather than being increased, crop yields after the campaign were substantially decreased. What is the loss caused due to the killing of sparrows ?

BEYOND PUBLICATION-TRANSPORTATION - THE CIRCULATORY SYSTEM-EXERCISE
  1. What is the reason for the Lubb- dubb sounds of the heart?

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  2. Observe the diagram and answer the questions What blood vessel is it?

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  3. Doctors used to hear heart beat by keeping ear on the chest later on u...

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  4. You heared a rhythmic sound from your heart after running. That means ...

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  5. We will get this stage if we travel overnight in the bus………..

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  7. Brownian movement, Pseudocoelom, Eucoelom ,Trachea, Heart. Find the c...

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  8. Prothrombinoverset(Thrombok i nase) rarr Thrombin- This is a part of w...

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  9. Artries supply blood to all the body parts Walls of artries are rigi...

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  10. Write differences between the right ventricle and the leflt ventricle.

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  11. Which artery brings oxygenated blood to kidney ?

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  12. Which of the following group, represent the correct pathway of blood f...

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  13. a) Supply of material is done through blood vessels in closed type of ...

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  14. Find out the correct statements from a and b a) The way for flow of ...

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  15. a) Ventricles expand soon after filled with blood during heart beat b...

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  16. a) Root hairs influlence the movement of water upto the terminal part ...

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  17. Is there any relation between transpiration and rainfall?

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  18. a) Root hairs influlence the movement of water upto the terminal part ...

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  19. Name the mamals that scratch the bark of trees to get food stored in t...

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  20. What is the reason for the heart beat?

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