Answer: Right atrioventricular valve prevents blood from flowing back from the right ventricle into the right atrium during right ventricular contraction.
Explanation:The cardiovascular system is the system that allows blood to circulate and transport nutrients, oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body to provide nourishment and help in excretion. One of its major components is the heart.
The heart is made up of heart valves which functions to prevent back flow of blood thereby maintaining the blood to flow one way through the heart.. the mammalian heart consist of 4 valves:
The gravity of a body increases with its size. The moon is smaller than the Earth, so an astronaut will weigh less on the moon than they will on Earth. Good luck ^^
