Question

give the answer of (2) and (5)​

Answer 1

Answer:

2)The septum separates the atria and ventricles in such a way that it forms a barrier between the heart chambers and this prevents mixing of oxygenated and deoxygenated blood.

5)Veins contain a series of one-way valves, and they are squeezed, blood is pushed through the valves, which then close to prevent back flow of blood

Answer 2

2.The septum separates the atria and ventricles in such a way that it forms a barrier between the heart chambers and this prevents mixing of oxygenated and deoxygenated blood.

5.Veins are less muscular than arteries and are often closer to the skin. There are valves in most veins to prevent backflow.

Hope it will help you