The Endocrine System of Animals

endocrine system Unlike exocrine glands , endocrine glands secrete their respective substances directly into the bloodstream rather than through a duct These

The major glands of the endocrine system are the hypothalamus, pituitary, thyroid, parathyroids, adrenals, pineal body, and the reproductive organs (ovaries and digestive system The endocrine system—the other communication system in the body—is made up of endocrine glands that produce hormones, chemical substances