NEET PG DENTAL EXAM

HISTOLOGY

BLOOD VESSELS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What are present in veins but absent in arteries?
A
smooth elastic tissues
B
muscular tissues
C
valves
D
None of the above
Explanation: 

Detailed explanation-1: -Structures called valves are present in veins and lymph ducts but are absent in arteries. These valves mainly prevent the backflow of blood in the vessels. Due to the high pressure of blood flowing n the arteries, they do not require valves to prevent backflow of the blood.

Detailed explanation-2: -Arteries have no valves in their inner linings.

There is 1 question to complete.