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Standard X

Biology

Blood Vessels

The diagrams ...

Question

The diagrams given below are cross-sections of blood vessels.

Mention one structural difference between $A and B$ .

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Solution

A-Artery B-Vein

Thick, elastic, and more muscular walls.

They have narrow lumen and valves are absent.

Thin, non-elastic, and less muscular walls.

They have wider lumen and valves are present to prevent the backflow.

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Q. The figures given below show diagrammatic cross-sections of three kinds of blood vessels.

Q. The diagrams given are cross sections of blood vessels.

(i)

Identify the blood vessels

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and

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Name the parts labelled

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Blood Vessels

Standard X Biology

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A-Artery	B-Vein
Thick, elastic, and more muscular walls. They have narrow lumen and valves are absent.	Thin, non-elastic, and less muscular walls. They have wider lumen and valves are present to prevent the backflow.

The diagrams given below are cross-sections of blood vessels. Mention one structural difference between A and B.

A-Artery B-Vein Thick, elastic, and more muscular walls. They have narrow lumen and valves are absent. Thin, non-elastic, and less muscular walls. They have wider lumen and valves are present to prevent the backflow.

The diagrams given below are cross-sections of blood vessels.

Mention one structural difference between $A and B$ .

A-Artery B-Vein

Thick, elastic, and more muscular walls.

They have narrow lumen and valves are absent.

Thin, non-elastic, and less muscular walls.

They have wider lumen and valves are present to prevent the backflow.