Blood vessels contract slightly to help the flow of blood
As the heart beats, it pumps blood through a system of blood vessels, called the circulatory system. The vessels are elastic tubes that carry blood to every part of the body.
Veins.
Valves
toward the heart from the lungs
there are two main veins that makes the blood flow toward the heart which are the superior vena cava and inferior vena cava.
Valves are present in veins to prevent the backward flow of blood. These valves help ensure that blood moves in only one direction toward the heart by closing when blood tries to flow in the wrong direction.
Blood flow is faster in arteries than in veins. Blood flow in veins is lower pressure.
The vessel with valves that keep blood from flowing in the right direction is the vein. Veins have one-way valves that prevent backward flow of blood, ensuring it moves back towards the heart. This helps maintain proper circulation of blood throughout the body.
valves are only present in veins to stop the blood to move backwards through the vein but in arteries the muscle puts alot of pressure on the blood which stops it from moving in the wrong direction
in both the valves blood flow in one direction.
Valves cause our blood to flow in one direction, thus preventing regurgitation of blood.
veins, they have valves, the reason why they have them is because blood flow is slow
The major risk of drawing blood or starting an IV is