Question

Q.157. Arteries and veins can be differentiated on the basis of all, except ---
1) Cross section of lumen
2) Thickness of wall
3) Number of layers making up the wall
4) Presence of valves​

Answer 1

Answer:

Except the 1) no cross section of lumen

Hope it will help you....

Answer 2

$\bold{Answer\;:-}$

• Arteries and veins can be differentiated on the basis of all, except 3. number of layers making up the wall.

• The wall of the arteries and veins consists of three layers :-

› Tunica interna - the innermost layer consisting of an endothelium and an elastic membrane.

› Tunica media - middle middle layer of smooth involuntary muscle and elastic fibres.

› Tunica externa - an external layer consisting of loose connective tissue.

$\bold{Hope\;it \; helps\;!}$