BIOM 3200 Chapter Notes - Chapter 1: Phospholipid, Vasoconstriction, Lipogenesis

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Chemical classification of hormones: hormones vary widely in chemical structure. Follicle-stimulating hormone (fsh) and luteinizing hormone (lh: steroids, steroid hormones are derived from cholesterol after an enzyme cleaves off the side chain attached to the five-carbon d ring, ex. Testosterone, estradiol, progesterone, cortisol: hormone molecules can be divided into polar and non-polar groups. 29 amino acids alpha cells in islets of. The nonpolar hormones are soluble in lipids so they are called lipophilic hormones. Lipophilic hormones can enter their target cells unlike the polar hormones. Steroid hormones are secreted by the two endocrine glands: the adrenal cortex and the gonads. The adrenal cortex secreted corticosteroids and small amounts of sex steroids. Major thyroid hormones are composed of two derivatives of the amino acid tyrosine bonded together. Are like steroids since they are small, non-polar molecules. Active when taken orally as a pill.

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