PSYC 100 Lecture Notes - Lecture 3: Spinal Nerve, Peripheral Nervous System, Parasympathetic Nervous System
Document Summary
Ns (central nervous system) (cid:0) consists of the brain and spinal cord. So the cns receives, processes, interprets and stores incoming information from the pns. Cns also sends out messages to muscles, glands, organs. Spinal cord: bridge between the brain and parts of the body below the neck, primary means for transmitting messages between the brain and the rest of the body. Spinal nerves: part of the peripheral nervous system o. Spinal reflexes: enabled by spinal nerves, allow bypassing messages to the brain, ex. : touch a hot stove ouch pull hand back, no need to take time to route through brain: simple pathways in the nervous system that rapidly generate muscle contractions. Somatic nervous system: conveys information into and out of the cns: voluntary responses, moving your arms, speaking, working out etc, goes to the skin, joints, and muscles. Autonomic nervous systems (ans): carries involuntary and automatic commands that control blood vessels, body organs, and glands o.