The Endocrine System

The Endocrine System - • Stimulates the development of...

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The Endocrine System Hypophyseal portal system • All blood entering the portal system will reach the intended target cells before returning to the general circulation Hormones of the adenohypophysis • Thyroid stimulating hormone (TSH) • Triggers the release of thyroid hormones • Thyrotropin releasing hormone promotes the release of TSH • Adrenocorticotropic hormone (ACTH) • Stimulates the release of glucocorticoids by the adrenal gland • Corticotrophin releasing hormone causes the secretion of ACTH Hormones of the adenohypophysis • Follicle stimulating hormone (FSH) • Stimulates follicle development and estrogen secretion in females and sperm production in males • Leutinizing hormone (LH) • Causes ovulation and progestin production in females and androgen production in males Gonadotropin releasing hormone (GNRH) promotes the secretion of FSH and LH Hormones of the adenohypophysis • Prolactin (PH)
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Unformatted text preview: • Stimulates the development of mammary glands and milk production • Growth hormone (GH or somatotropin) • Stimulates cell growth and replication through release of somatomedins or IGF • Growth-hormone releasing hormone (GH-RH) • Growth-hormone inhibiting hormone (GH-IH) Melanocyte stimulating hormone (MSH) • May be secreted by the pars intermedia during fetal development, early childhood, pregnancy or certain diseases • Stimulates melanocytes to produce melanin The posterior lobe of the pituitary gland (neurohypophysis) • Contains axons of hypothalamic nerves • neurons of the supraoptic nucleus manufacture antidiuretic hormone (ADH) • Decreases the amount of water lost at the kidneys • Elevates blood pressure The posterior lobe of the pituitary gland (neurohypophysis) • Neurons of the paraventricular nucleus manufacture oxytocin • Stimulates contractile cells in mammary glands • Stimulates smooth muscle cells in uterus...
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This note was uploaded on 11/22/2011 for the course BSC BSC1085 taught by Professor Sharonsimpson during the Fall '10 term at Broward College.

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The Endocrine System - • Stimulates the development of...

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