img026 - AUTONOMIC NERVOUS SYSTEM No direct voluntary...

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Unformatted text preview: AUTONOMIC NERVOUS SYSTEM No direct voluntary control ANS deals with cardiac muscle, smooth muscle, and glandular activity Composed of two divisions, physiologically antagonistic to each other i SYMPATHETIC - speeds up_ body processes ? L PARASYMPATHATIC - slows down body ? SYMPATHETIC SYSTEM F Communicating Rami of T1 - T12, and L1 & L2 join with sympathetic ganglion to form sympathetic trunk Also called T HORA COLUMBAR system Ganglia are near spinal column Short greganlionic fibers Long 20stgangli0nic fibers PARASYMPATHETIC SYSTEM Origins from Cranial Nerves III, VII, IX and X , and Spinal nerves 82, S3, and S4 T Also called CRANIOSA CRAL System q _ Ganglia here are located on or near the organ affected Long greganglionic fibers Short 20stgangli0nic fibers SYMPATHETIC E] INFLUENCE - E Accelerate heart rate Release adrenaline -, , Increase glycogen mobilization Dilate bronchi Dilate pupils Dilate peripheral blood vessels Slow down or stop digestion PARASYMPATHETIC INFLUENCE A Slows heart rate Inhibits glycogen mobilization Constricts peripheral blood vessels Constricts bronchi Constricts pupil E Aids or speeds up digestion and absorption of nutrients ...
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