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zool 3 slides - Endocrine system (1) 1. NS NS- Endocrine...

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Endocrine system (1) . NS----- ndocrine ystem 1. NS Endocrine system (Ntr) (Hormone) pathway pathway (negtive feedback& homeostasis) 2. Hypothalamus (3 roles) 1) Hypothalamus --- ant. Pituitary (Epithelial) --- Target organs XIS AXIS RH [+IH] portal FLAT [P(I)G] Hormone/acitivity? tropic hormones non-tropic H (tropin) 2) Hypothalamus --- post. Pituitary (Nervous) DH & O release 3) Hypothalamus --- ANS ADH & O release 3. Hormonal AXIS (hypothalamus – pituitary gland – endocrine target organs)
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Endocrine system (2) 4. Independent regulation cycles (Organs? Hormone? Actions?) 1) Calcium: thyroid (C cells, calcitonin ), parathyroid ( PTH ) 2) Glucose : Pancreatic 2 hormones ( islets of Langerhans ) Alpha cells glucagon increase blood glucose p gg g Beta cells Insulin decrease blood glucose (BUILDING hormone) Hypothalamus Dependent Glucose regulation cycles (Organs? Hormone? Actions?) RH ACTH teroids ( drenal Cortex) CRH steroids ( Adrenal Cortex) gluco corticoids (ex.: cortisol) increase blood glucose BREAKING DOWN or USING UP hormones sp under tress 3. BREAKING DOWN or USING UP hormones esp.under stress
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This note was uploaded on 02/06/2012 for the course ZOOL 2303 taught by Professor Pan during the Spring '11 term at Texas Tech.

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zool 3 slides - Endocrine system (1) 1. NS NS- Endocrine...

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