Chapter 19: The Cardiovascular System: Blood Vessels

Epinephrine, norepinephrine. Derivatives of Tryptophan: Dopamine, serotonin, melatonin. 18-2 Hormones . Peptide Hormones . Are chains of amino acids . Most are synthesized as prohormones. Inactive molecules converted to active hormones before or after they are secreted. Glycoproteins. Proteins are more than 200 amino acids long and have ... ................
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