Question

Maximum surface area of circulating system is
seen in
(a) heart (b) capillaries
(c) arterioles (d) veins

Answer 1

Answer:

b. capillaries.................

Answer 2

Maximum surface area of circulating system is capillaries

Option-(b)

Step by step explanation

Functions of capillaries

•  Capillaries are the smallest blood vessel in the body. They are only one cell thick and are the sites in which oxygen and other nutrients are transferred from the bloodstream to other tissues in the body .
• They help connect to arteries and veins. and  to facilitating the exchange of certain elements between  blood and tissues.
• The  capillary walls consist of a thin layer of cells called endothelium which is surrounded by another thin layer called the basement membrane.

Reason: Capillaries are like a dense network system and spread far and wide over large areas of the surface. Easy exchange of materials carried by blood cells and tissues  of the body occurs very rapidly because of their spread in large surface areas.

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