PSYC 372 Lecture Notes - Lecture 2: Dura Mater, Pia Mater, Autonomic Nervous System

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Chapter 3, aligned with chapter 3 textbook notes: cns. Encased in bone (skull brain; spine vertebrae: pns. Neural circuits outside of the skull and vertebrae. Parasympathetic: pns 2 divisions, somatic nervous system (sns) Interacts with external environment: what you have control over, autonomic nervous system (ans, egulates (cid:271)od(cid:455)(cid:859)s i(cid:374)ter(cid:374)al e(cid:374)(cid:448)iro(cid:374)(cid:373)e(cid:374)t, automatic processes (breathing, heart rate, afferent nerves (cid:862)affere(cid:374)t to b = a(cid:272)(cid:272)epted (cid:271)(cid:455) b(cid:863) Bring information into the brain or brain structure. Afferent nerves carry sensory information from sense organs, skeletal muscles, joints, etc. to the cns: efferent nerves (cid:862)effere(cid:374)t to a = e(cid:454)iti(cid:374)g a(cid:863) Carries information away from the brain or brain structure. Motor innervate voluntary muscles, striated muscles, and organs. Afferent nerves carry sensory signals from internal organs to cns. Efferent nerves carry moto signals from cns to skeletal muscles: sympathetic vs. parasympathetic, sympathetic nerves stimulate, organize, and mobilize energy resources in threatening/stressful situations.

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