chapter7b Introduction to the Endocrine System 2

chapter7b Introduction to the Endocrine System 2 - Chapter...

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Chapter 7b Introduction to the Endocrine System
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Simple Endocrine Reflex: Parathyroid Hormone Figure 7-10 Bone and kidney Low plasma [ Ca2+ ] Plasma [ Ca2+ ] Bone resorption Kidney reabsorption of calcium Parathyroid cell Parathyroid hormone Production of calcitriol leads to intestinal absorption of Ca2+ Negative feedback
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Neurohormones: Major Groups Adrenal medulla Catecholamines Hypothalamus Anterior pituitary Posterior pituitary
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Endocrine Control Three levels Hypothalamic stimulation—from CNS Pituitary stimulation—from hypothalamic trophic hormones Releasing factors or Neurohormones Endocrine gland stimulation—from pituitary trophic hormones Stimulate other hormones
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Negative Feedback Controls Figure 7-14
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Control Pathway for Cortisol Secretion Figure 7-15
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IGFs GH ANTERIOR PITUITARY GHRH HYPOTHALAMUS Bone and soft tissue Liver GH cells in anterior pituitary Growth Hypothalamus Figure 7-17 A Complex Endocrine Pathway Growth hormone is an example of a complex endocrine pathway
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The Pituitary Gland Anatomy Figure 7-11
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The Pituitary Gland: Anterior Figure 7-13 HYPOTHALAMIC HORMONES ANTERIOR PITUITARY HORMONES NONENDOCRINE TARGETS ENDOCRINE TARGETS AND THE HORMONES THEY SECRETE Somatostatin GHRH* GnRH Portal system Anterior pituitary FSH LH
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This note was uploaded on 01/03/2012 for the course BIO 308 taught by Professor Acbrown during the Spring '10 term at Portland.

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chapter7b Introduction to the Endocrine System 2 - Chapter...

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