Topic 03-CNS integration-S_2011

Topic 03-CNS integration-S_2011 - 3. Central nervous system...

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Click to edit Master subtitle style 2/23/11 3. Central nervous system control and feedback A. Endocrine system vs the nervous system B. C. Feedback control D. Temporal control
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2/23/11 We now have hormones, receptors Put it together in a coherent physiological system Endocrine system is tightly integrated with the nervous system Allows endocrine cells to respond to complex stimuli Not all endocrine systems are regulated through the CNS 2
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2/23/11 Neuroendocrine responses involve nerve cells Respon se Neuron 1. Through blood to target 2. Direct from nerve cell Interaction can go the other way: glands to neurons Many hormones are also neurotransmitters Perhaps all peptide hormones 1 2 H H Respon se Hormone secreted from specialized neuron 3
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2/23/11 Endocrine & neural signaling have much in common Property Endocrine system Nervous system Molecule Hormones Neurotransmitters Recognition Cell Surface Receptors Cell Surface Receptors Transport Distant sites Tiny distances (synapses) Reuptake None Common Afferent / Efferent Pathways Only neuroendocrine Yes Tissue targets All tissues Glands, Muscles, other neurons, sensory organs, Responses Anything Contraction & Secretion 4
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2/23/11 Most neuronal control occurs through the Hypothalamic- pituitary axis (HPA) Pin eal gla nd Pituitar y gland 5 Diencephal on Thala mus Hypothala mus Corpus callosum
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2/23/11 The pituitary is really two glands Anterior: front Hypothalam us Infindibul um Sphenoi d bone Posterior pituitary Anterior pituitary 6
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This note was uploaded on 02/22/2011 for the course PGY 452 taught by Professor Dr.baizer during the Spring '11 term at SUNY Buffalo.

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Topic 03-CNS integration-S_2011 - 3. Central nervous system...

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