Secretion is regulated either by regulators in a gland that detect high or low levels of a chemical and inhibit or stimulate secretion or by a complex mechanism involving the hypothalamus and the pituitary.

• 分泌不仅由腺体的调节素来调节(侦测一种化学物质的高或低的水准,而抑制或刺激分泌),还由一种复杂的结构来调节(包含下视丘和脑下垂体)。