HPRO 4412 Chapter 5: Chapter 5 – The sex hormones
16 Jan 2016
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Document Summary
Released into bloodstream via endocrine organs gonads and. Sexual relations, orgasm, gamete release, pregnancy, parturition, breastfeeding, affiliation, bonding. Lipid and phospholipid hormones: steroid androgens, estrogens, progestogens, eicosanoid prostaglandins. Monoamine: fsh, lh, vasopressin, oxytocin, adrenaline, noradrenaline from tyrosine, tryptophan. Sex steroids synthesized and secreted by pns and cns tissues. Gonads (ovaries and testes) secrete estrogens and. Ovaries and adrenals produce androgens and precursors in: adipose tissue, adrenal glands women. Hypothalamus (paraventricular and supraoptic nuclei: oxytocin, vasopressin, transported from hypothalamus to other parts of the brain as neurotransmitters or posterior pituitary released as hormones. Oxytocin and vasopressin (pair bonding and breast feeding) Maturation of gonads, production of gametes: androgens, estrogens, progestagens. Ruptures egg follicle to stimulate growth of corpus luteum. If pregnancy occurs, the corpus luteum stays and secretes progesterone for the first 3 months of the pregnancy. Induce enzymes required to convert androstenedione to estradiol. Binds to cells in testes to secrete. Pituitary controls gonads by lh and fsh.
