In the arteries it is away from the heart (centrifugal), in the veins it is toward the heart (centripetal).
Valves open and close to control the flow of blood in a one-way direction through your heart. These valves prevent the backflow of blood and ensure that it travels in the correct sequence through the heart chambers.
Blood itself does not "know" anything: it is not conscious. The direction of blood flow is regulated by valves in blood vessels, and the blood moves because the heart pumps it around the body.
Lymph flows in the direction from the tissues towards the circulatory system. It moves through the lymphatic vessels by skeletal muscle contractions, breathing movements, and pulsations of nearby blood vessels.
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.
Heart valves, specifically atrioventricular and semilunar valves, prevent the backflow of blood and help it flow in one direction through the heart. The valves open and close in response to pressure changes during the cardiac cycle.
forward
human
The change in direction of blood flow typically occurs at the level of the heart, which pumps oxygenated blood to the rest of the body through arteries and receives deoxygenated blood back through veins. The specific altitude at which changes in blood flow may occur can vary depending on factors such as oxygen levels, exertion, and individual health.
Veins.
Valves control the flow of blood. Without them blood could flow backwards.--------------------------Yes, true. Valve would maintain one way traffic for blood right from the heart and to outside parts of the body and form outside to the heart.
NO
valves
yes :)
Valvs
Valves
toward the heart from the lungs
the valves