bio10Chapter24synopsis - Hormones and the human mind Endocrine glands secrete hormones straight into the bloodstream Hormones help to control many body

bio10Chapter24synopsis - Hormones and the human mind...

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Hormones and the human mind Endocrine glands secrete hormones straight into the bloodstream. Hormones help to control many body functions, such as growth, repair and reproduction. The endocrine system involves many organ systems and hormones, many of which are still being investigated and understood. Hormones are chemicals that are like secreted by endocrine glands into the bloodstream and are taken up by receptor molecules in target cells. Not like neurotransmitters in neuronal signaling, hormones go more slowly and act throughout the body. Most hormones act on receptors in a wide variety of cells, coordinating influences throughout the body. Steroid hormones pass through the membrane and bind to receptor molecules inside the cell, ultimately regulating gene expression. Negative response systems control hormone secretion. Neuroendocrine cells in the hypothalamus send axons down the pituitary stalk to the posterior pituitary, releasing two hormones ,oxytocin and vasopressin into the bloodstream. Release of the

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