PSY100H1 Lecture Notes - Somatic Nervous System, Peripheral Nervous System, Autonomic Nervous System

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8 Oct 2013
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PSY100H1 Full Course Notes
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PSY100H1 Full Course Notes
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Why you can move your hand away from a dangerous stimulus (e. g. , hot stove) before you consciously experience any pain. Transits information to the cns, and responds to messages from the cns to perform certain behaviours or make bodily adjustments. Divided into two primary components: somatic nervous system (sns, autonomic nervous system (ans) Cns muscles/skin/joints (motor neurons; efferent pathway: also contains sensory neurons which send signals to the brain. Muscles/skin/joints cns (sensory neurons; afferent pathway) Autonomic nervous system: concerned with the internal environment. Somatosensory sensations from within the body (e. g. , Cns glands/internal organs: two types of signals travel from the cns to the glands/internal organs: Prepares the body for action ( fight or flight ) Can be activated by all kinds of things. Returns the body to its normal resting state ( rest and digest or feed and breed ) Opposing functions of the sympathetic system, but the two systems work in a complementary (vs. antagonistic) fashion.

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