2-Hypothalamus-pituitary[1] - 1 Organization of the...

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Unformatted text preview: 1 Organization of the Organization of the Organization of the Organization of the Mammalian Mammalian Hypothalamus Hypothalamus-Pituitary Pituitary Axis Axis Axis Axis 2 I. The Mammalian Pituitary I. The Mammalian Pituitary 3 Adenohypohysis: glandular structure • Adenohypohysis: glandular structure- pars distalis = pars anterior- pars tuberalis- pars intermedia • Neurohypohysis: neurohemal region- median eminence = pars eminens median eminence pars eminens- infundibular stalk- pars nervosa 4 Hypothalamo Hypothalamo-hypophyseal portal hypophyseal portal system system 5 Major hormones of the pars distalis Major hormones of the pars distalis Somatotropin = growth hormone (GH • Somatotropin = growth hormone (GH) • Prolactin (PRL) • Thyrotropin = thyroid stimulating hormone (TSH) • Follicle stimulating hormone (FSH) • Luteinizing hormone (LH) • Corticotropin = adrenocorticotropic hormone (ACTH) Additional hormones Additional hormones Melanotropin = melanocyte stimulating • Melanotropin = melanocyte stimulating hormone ( -MSH) produced by pars intermedia (if present) • Lipotropins (LPH) • Endorphins 6 II. The Mammalian II. The Mammalian Hypothalamus Hypothalamus 7 Hypothalamic hormones Hypothalamic hormones Stored in the pars nervosa • Stored in the pars nervosa:- oxytocin- vasopressin, phenypressin, mesotocin • Stored in the eminentia mediana: control the functioning of the adenohypophysis- releasing hormones/factors releasing hormones/factors- release-inhibiting hormones/factors 8 III. Tropic Hormones of the III. Tropic Hormones of the Adenohypophysis Adenohypophysis 9...
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2-Hypothalamus-pituitary[1] - 1 Organization of the...

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