In humans, pharyngeal slits are presents in the embryo and develop into the the ears
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Compared to arteries, valves have no pulse, have thin walls and have valves that prevent backflow of the blood. The pressure in the veins is less than that of the arteries, hence, there is no pulse. They are nearer to the surface of the skin. It also connects arteries and capillaries which transport blood all throughout the circulatory system.
Glucose is converted into ATP because it is usable energy. Glucose is stored energy
