The Autonomic Nervous System and Visceral Reflexes

The Autonomic Nervous System and Visceral Reflexes -...

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Autonomic Nervous System The Autonomic Nervous System and Visceral Reflexes Autonomic Nervous System * part of the nervous system that controls the motor systems of * cardiac muscles * smooth muscles of * glands * vessels * thoracic cavity * abdominal cavity * piloerector muscles * Also called the visceral motor system to distinguish it from the somatic motor system that controls skeletal muscles Autonomic Nervous System * carries out its actions involuntarily, without conscious awareness * end organ effectors do not depend entirely on the ANS for proper function, but only serve to adjust their activity in accordance to the bodies changing needs. * ex: the heart can function if nerves are severed. Visceral Reflexes * Reflex arc similar to somatic reflex arch including * receptor, efferent neuron to CNS, interneuron, efferent neuron carrying motor signal away from CNS, effector * Ex: baroreceptors in controlling decreased blood pressure Divisions of the Autonomic NS * ANS has two divisions
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This note was uploaded on 01/30/2012 for the course BSC BSC1085 taught by Professor Sharonsimpson during the Fall '10 term at Broward College.

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The Autonomic Nervous System and Visceral Reflexes -...

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