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प्रश्न
Describe the functions of the: Blood vessels
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उत्तर
Blood vessels are a necessaiy part of the body’s circulatory system. The blood vessels carry blood throughout the body.
Three types of blood vessels are :
- Arteries: They carry oxygenated blood from the heart to all parts of the body.
- Veins: They carry deoxygenated blood from the body cells to the heart.
- Capillaries: They form the connection between the arteries and the veins where exchange of substances takes place
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संबंधित प्रश्न
The diagram given below represents a section of the human heart. Answer the questions that follow:
- Which parts of heart are in the diastolic phase? Give a reason to support your answer.
- Label the parts numbered 1 and 2 in the diagram. What type of blood flows through them?
- What causes the heart sounds ‘LUBB’ and ‘DUP’?
- Name the blood vessels that supply oxygenated blood to the heart muscles.
- Draw neat labelled diagrams of a cross section of an artery and a vein.
What is Endothelium?
Given diagram shows a simple diagram of the circulation of blood in a mamma showing the
main blood vessels, the heart, lungs and body tissues. The blood vessel, labelled 6, contains
deoxygenated blood and the valve leading to it has three semi-lunar pockets.
(a) Name the blood vessels and organs marked by numbers 1 to 8.
(b) What is meant by the term ‘double circulation’ of blood in mammals?
(c) what is diastole?
[There is an “error” in the diagram. According to the usual practice the pulmonary (lung)
circulation is shown upward and the systemic downward, but here it is reversed].
Explain with reasons.
Human blood is red coloured.
True or false:
Impure blood is received by the right auricle.
Define the Veins.
Name the main artery which carries blood to different parts of the body.
Why is circulatory system also known as transport system?
The stomach is like a ______.
The nodal tissue located in the lower left corner of right atrium is ______.
