Materials moving between body cells and blood capillaries pass through the _________, which surrounds all tissue cells.

Which tonsils are located in the nasopharynx?

The mineral required for the normal conduction of nerve impulses as well as ATP–ADP conversions is ___________.

Deciduous teeth lack _______, whereas permanent teeth have all four types of teeth.

Acid chyme entering the duodenum causes the intestinal mucosa to secrete the hormone ________, which stimulates the secretion of ________ that is rich in bicarbonates.

The antibody that acts as a receptor on the surface of B cell is ______.

________ are leukocytes that neutralize histamine and destroy parasitic worms.

_________ that migrate into tissues become mast cells, which release _________ in allergic reactions.

A nutrient that is required for the synthesis of fatty acids as well as playing a role in cellular respiration is ________.

________ mature in the thymus gland and release chemicals to destroy pathogens or activate other immune cells.