Question

22. ASSERTION (A): Capillaries are the thinnest blood vessels. REASON (R):Capillaries connect the branches of arteries and veins. Both (A) and (R) are true and (R) is the correct explanation of (A). Both (A) and (R) are true but (R) is not the correct explanation of (A). (A) is true but (R) is false. (A) is ​

Answer 1

Answer:

Assertion is true but the reason is not true.

so

Assertion is true but reason is false

Because

capillaries are blood vessels where pressure is low so they are thin.

And had one way valve with stops blood to fall back.

Thanks.

Answer 2

Answer:

Explanation:

Both the assertion and the reason are correct but the reason is not for this assertion.

REASON:

Because of their porous walls, chemicals can diffuse or travel through them rapidly and readily. Because capillaries have a single layer of endothelial cells, the flat cells that line all blood vessels, they are substantially thinner than arteries and veins.

• The smallest blood veins in an organism's body are known as capillaries.
• Because capillaries have to exchange gases as well as nutrients between the blood and the bodily tissue, capillaries are the smallest blood channels. For instance, capillaries in the lungs draw oxygenated blood from the lungs and return deoxygenated blood to the lungs.
• #SPJ3