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REGULATION OF REPRODUCTION

REGULATION OF REPRODUCTION. CHAPTER 5. Brain – Hypothalamus - Pituitary Gland. PINEAL. Melatonin. HYPOTHALAMUS. GnRH (Gonadotropin Releasing Hormone). ANTERIOR PITUITARY. LH (Luteinizing Hormone) FSH (Follicle Stimulating Hormone) PROLACTIN TSH (Thyroid Stimulating Hormone)

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REGULATION OF REPRODUCTION

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  1. REGULATION OF REPRODUCTION CHAPTER 5

  2. Brain – Hypothalamus - Pituitary Gland PINEAL Melatonin HYPOTHALAMUS GnRH (Gonadotropin Releasing Hormone) ANTERIOR PITUITARY LH (Luteinizing Hormone) FSH (Follicle Stimulating Hormone) PROLACTIN TSH (Thyroid Stimulating Hormone) ACTH (Adrenal Cortical Tropic Hormone) STH or GH (SOMATOTROPIN) POSTERIOR PITUITARY OXYTOCIN ADH (Antidiuretic Hormone)

  3. Suckling stimulus Tactile stimulus of the penis Afferent neurons Afferent neurons Muscles in excurrent ducts Oxytocin production release from the posterior lobe Ejaculation Myoepithelial cell around alveoli Milk letdown

  4. Suckling stimulus Tactile stimulus of the penis Afferent neurons Afferent neurons Muscles in excurrent ducts Oxytocin production release from the posterior lobe Ejaculation Myoepithelial cell around alveoli Milk letdown

  5. P4 -- - - - - - - - -

  6. Hormones classified by source Hypothalamus Uterus Gonadotropin Releasing Hormone Oxytocin Prostaglandin F2a Pituitary Placenta Luteinizing hormone Follicle stimulating hormone Prolactin Oxytocin TSH, ACTH, STH, ADH Progesterone Estrogen Placental Lactogen Gonads Equine Chorionic Gonadotropin Estrogen Progesterone Testosterone Inhibin Oxytocin Relaxin Human Chorionic Gonadotropin

  7. Hormones classified by mode of action Neurohormones Oxytocin Releasing Hormones Gonadotropin Releasing Hormone Gonadotropins Luteinizing Hormone Follicle Stimulating Hormone Human chorionic gonadotropin Equine chorionic gonadotropin Sexual Promoters Estrogen Progesterone Testosterone Luteolytic - Prostaglandin F2a Pregnancy Maintenance / Lactogenic General Metabolic – ACTH, STH, TSH

  8. Hormones classified by biochemical structure Peptides - small proteins – few amino acids Gonadotropin releasing hormone Glycoproteins – polypeptides with carbohydrate moieties Luteinizing hormone Follicle stimulating hormone Thyroid stimulating hormone Inhibin Activin Prolactin Steroids – synthesized from cholesterol Progesterone Testosterone Estradiol Prostaglandins – unsaturated hydroxy fatty acids from arachidonic acid Prostaglandin F2a Prostaglandin E2 Pheromones

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