blood flows into the veins quiet slowly as they are much wider compared to the flow of blood in the arteries which are rather narrow.because of the low pressure of blood on the flow inside the veins there are great possibilities that the blood is likely to flow backwards which may cause complications in the flow of blood.to prevent this from happening the veins contain valves that stop the back flow of blood
valves in the veins
cardiovascular system
a flap of tissue that prevants blood from flowing backward is
heart valves
your skin of course!
The heart, blood vessels, and blood cells are parts of the cardiovascular system.
Heart valve.
The blood is part of the cardiovascular system.
blood vessels are a part of the circulatory system along with the blood and heart
The cardiovascular system work together with blood, blood vessels, and the heart.
The cardiovascular system and the circulatory system are the same. They consist of the heart, veins, blood vessels, arteries and blood supply.
The things that make up the cardiovascular system are the blood, blood vessels, and the heart. The job of the cardiovascular system is to move things such as blood, oxygen and nutrients through the body.