What are 3+ symptoms of sickle cell anemia?

Sweating and breathing is an example of differentiation specialization maintaining homeostasis metabolism

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time