Question

1)name the blood vessel which have valves what is the purpose of these valves
2)mention one major cause and effect of hypertension in human body

Answer 1

1.Veins have valves in them
They prevent the backflow of blood
2. Cause: Stress, Effects : Heart attack

Answer 2

Blood vessels which have valves are veins

The main function of the valves in veins is to prevent back flow of blood.

Hypertension, or high blood pressure, is when your blood travels through blood vessels with more force than is considered healthy. When blood pressure is high, it can damage artery and blood vessel walls over time. This leads to dangerous complications and even death if left untreated.