Question

All of the following concerning veins are true EXCEPT

A) have valves

B) made up of three layers of tissue

C) branch of venules

D) regulate blood pressure

E) Act as a blood reservoir

Answer 1

Option (c) is correct option

Explanation:

Because veins are branched into venules but not branches of venules.This is the correct statement.so it is not considered as statements which are correct about veins.

Option (a) is not correct option because, veins have valves to stop backward flow.This is the correct statement but not correct option.

Option (b) is wrong option because viens are made up of three layers of tissues is a correct statement.

Option (d) wrong option because above statement is correct because in viens vasodilation and vasoconstriction which helps in regulation of blood pressure.

Option (e) is wrong option because viens act as a blood reserviour is a correct statement as 60% of blood volume is maintained in viens.