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The Nervous System. Central Nervous System. Brain Spinal cord. Peripheral Nervous System. Carries info to & from spinal cord using 31 paired nerves & to the brain using 12 pairs of cranial nerves. Somatic Nervous System. Carries info to skeletal muscles affecting bodily mov’t
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The Nervous System
Central Nervous System Brain Spinal cord
Peripheral Nervous System Carries info to & from spinal cord using 31 paired nerves & to the brain using 12 pairs of cranial nerves
Somatic Nervous System • Carries info to skeletal muscles affecting bodily mov’t • voluntary sensory & motor functions
Autonomic Nervous System • Controls vital & automatic processes of the body • heart rate, blood pressure
Autonomic Nervous System • Sympathetic • Parasympathetic
Sympathetic Nervous System • Becomes active in response to emergency situations • “Fight or flight”
Parasympathetic Nervous System • Controls ongoing maintenance processes of the body. • Keeps body running smoothly
To illustrate differences • http://itc.gsw.edu/faculty/gfisk/anim/autonomicns.swf