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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The Endocrine System - Stimulates the development of...

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