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Body Fluids and Circulations

Long Answer Type

101.

What is a natural pacemaker ? What is artificial pacemaker?

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Short Answer Type

102.

How is oedema caused?

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103.

What is the use of Bundle of His in the conduction of cardiac impulse?

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104.
What is portal system?

Portal system is the system of blood vessels consisting of the hepatic portal vein with its tributaries and branches. It exists between the digestive tract and liver.

It is the system when veins collect blood from some parts of body and pour it into some other parts of body instead of taking it directly to heart. The hepatic portal vein carries blood from intestine to the liver before it is delivered to the systemic circulation.

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