an innate periodicity in an organism's physiological processes like sleep and wake cycles
the period of life just prior to sexual maturation
a histidine-derived amine compound that is released mainly by damaged mast cells in allergic reactions, causing dilation and permeability of blood vessels and lowering blood pressure
the deposition of lime or insoluble salts of calcium and magnesium
the ability to voluntarily control urinary and fecal discharge
acting independently of or done or occurring without volition