B. Peripheral Nervous System (PNS) - carries information from the sense organs to the CNS and then from the CNS to the muscles and glands. 1) Somatic Nervous System- nerves that connect the voluntary skeletal muscles and to sensory 2) Autonomic Nervous System- nerves that connect the heart, blood vessels, smooth muscles, & glands. Controls automatic functioning like heart rate, eye blinking, & digestion. Controls much of the physiological arousal you experience from emotions. It is this nervous system that is involved in the famous fight-or-flight response. a) fight-or-flight response- Walter Cannon (1932) - found that when confronted with dogs, cats responded by : 1. preparing to fight; 2 preparing to flee. People are the same. 1. sympathetic nervous system- prepares the body for emergencies. Responsible for the fight-or-flight response: brings blood from internals to externals (muscles), slows down digestion, signals adrenal glands to release hormones, etc. 2. parasympathetic nervous system
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