Blood Vessels


Life Process Transportation - Concepts
Class - 6th ISO Subjects
 
 
Concept Explanation
 

Blood Vessels

Blood moves around, in the body, through a system of tubes, called the blood vessels. They are of three types—the arteries, the veins and the capillaries.

Arteries :-

The vessel, which take blood away from the heart, to the various parts of the body, are called as arteries. These vessels carry oxygen containing blood.Arteries are elastic and thick walled and deep seated.

Veins :-

The vessels bringing blood back to the Heart from different parts of the body are called veins. These vessels carry blood having carbon dioxide in it. The veins are veins are thin walled and superficial as they are located just under the skin.

Capillaries :-

The arteries and veins are connected to each other by fine vessels, called the capillaries.

                                          

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Sample Questions
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Question : 1

Which of the following are correct ?

(a) Blood vessels - capillaries are thinnest walled .

(b) Blood vessels - veins are less elastic walls .

Right Option : C
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Question : 2

Which of the following are correct ?

(a) Arteries are thick walled vessels .

(b) Veins are thin walled .

 

Right Option : C
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Question : 3

Which of the following are correct ?

(a) Blood vessels are the hollow tubular structures which help in flow of oxygenated blood from heart to the body parts and then brings back de-oxygenated blood to the heart.

(b) Blood flows at a high pressure in arteries .

(c) The absorption of nutrients and exchange of respiratory gases between blood and tissues take place in capillaries .

Right Option : D
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