Spinal Cord: long, tube-shaped bundle of neurons, runs from the brain stem to lower back, job: carry nerve impulses back and forth, a two way road , sends messages to the body, receives messages from the body, Brain: consists of three major parts, includes the cerebrum, includes the cerebellum, includes the brain stem, controls conscious functions, controls body position and balance, controls involuntary body functions, Peripheral Nervous System: contains nerves that run through entire body, its two divisions carry messages in opposite directions, contains sensory division, contrains motor division, all nervous tissues (other than brain and spinal cord),

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