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Biology : Human Circulatory System I


Given the QUESTION, identify the ANSWER

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Multiple choice

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1.

This statement is not true :

  All veins carry deoxygenated blood.

  Veins are thin-walled.

  Veins return blood from the various parts of the body to the heart.

  Veins contain valves.

 
Hint      

2.

Identify the blood vessel 'A' in this diagram.
 heart

  Inferior vena cava

  Carotid artery

  Pulmonary artery

  Aorta

  Half-n-half Clue
 

3.

Due to presence of _______ , back flow of blood is prevented in veins.

  Arteries

  Septa

  Thick walls

  Valves

  Half-n-half Clue
 

4.

Which of these does not cause an increase in pulse rate?

  Anxiety

  Fever

  Exercise

  Sleep

 
Hint      

5.

Which blood vessels carry blood from heart to various parts of the body?

  Veins

  Capillaries

  Arteries

  All of these

  Half-n-half Clue
 

6.

Very fine vessels called capillaries connect arteries and veins to each other.

  True

  False

 

7.

Bleeding time is prolonged in hemophilia.

  True

  False

 


 
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