Atoms in molecules share pairs of electrons when they make ionic bonds.
Baroreceptors. These are found in the carotids and aortic arch. They respond to pressure exerted on the vessels.
Histamine in Digestion Histamine plays a role in gastric secretion by helping to induce the production of acid in the stomach. Histamine in sleep: the body regulates the amount of histamine in circulation and maintains a careful balance.
They both contain cells and they both have nucleic acid
