Q3 of 95 Page 94

Name the following:
The kind of blood vessels which have no muscular walls.

Capillaries

Explanation - Capillaries are very narrow tubes about 8 micrometers in diameter. It has no muscle.

Is it true that your heart beats more than one lac times per day?

Name the following:

Any one vein which starts from an organ and ends in another organ besides the heart.

Name the following:

An artery which carries impure (deoxygenated) blood.

Name the following:

The kind of blood cells which can squeeze out through the walls of one category of blood vessels.

Questions · 95

7. The Circulatory System

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Name the following:The kind of blood vessels which have no muscular walls.