</span><span>Hormones are chemical signaling
molecules secreted by glands, either endocrine or exocrine. </span><span>Endocrine glands secrete hormones
directly into the bloodstream without using a duct,
unlike the exocrine glands. Endocrine
glands include pancreas, hypothalamus, pineal gland, pituitary gland, thyroid
gland, parathyroid gland, adrenal gland, ovaries, testes</span>
