Because the heart is designed to pump forward and the vascular system has valves that stop blood from moving backwards.
So blood doesn't flow backwards.
welll I guess so blood doesn't flow backwards.
aorta
Yes,the circulatory system acts as the transport system that moves the blood throughout the body. It provides a continuous supply of fresh blood.
the (circulatory) respiratory system (blood flow carries oxygen)
Well the circulatory system is the system of blood flow. If you want to know where it is, then I guess the answer would be in your veins- because that's where the blood is. Think about the "circ-" in circulatory, and remember when someone talks about their circulation, they're talking about the flow of blood in a part or parts of their body.
In the human circulatory system: Valves prevent the backwards flow of blood. In a brass instrument: Valves are pushed to change the length of the pipe, thus changing the pitch.
Closed circulatory systems have blood that does not flow in defined blood vessels. Examples are insects and how their organs are bathed continually in "blood". Open circulatory systems have blood that flows in vessels. Humans have this system as blood flows in veins, arteries and capillaries.
A bloodstream is the flow of blood through the circulatory system of an animal.
Flow; also circulation, as in the Circulatory System.
In an open circulatory system, the blood does not flow in closed vessels and surrounds the organs directly within the body cavity. This type of circulatory system is found in invertebrates like insects and mollusks.
get a life you nerd