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IMG_NEW_0011 - 'hi W:s organism to organism 8 A chemical...

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O 3) Funetbnalty re*ated: many physiological systems are controlled by both nervous and endocrine communication 5. Endocrine systems are defined by mode of action and distance. 6. Both systems respond to feedback (information|. You are familiar with this from lab or previous lectures. One of the few endocrine glands to function autonomously w/o central control by hypothalamus/ pituitary 7. Chemical signals operate at almost all levels of biological organization. lntracellular level Cellular level: bdlh Local regulators - nutStiiAe action cell to r"lt - P^rftr^laction Tissue to tissue Organ to organ (classic endocrinology)
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Unformatted text preview: 'hi+W:s - organism to organism 8. A chemical signal can act very differently in different organisms showing the evolution of its function one hormone:many actions = rt proractin tfl{ . "pleiotropy" w!-Stimulates mammary gland growth and milk synthesis in mammals Regulates fat metabolism and reproduction in birds Delays metamorphosis in amphibians Regulates salt/water balance in FW fish Within an organism, hormones can have severalfunctions 9. A sinele characteristic affects all main properties of hormones (synthesis, storage, transport, mode of cellular action) ... It...
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