Two Functions of the Nervous System - gathers and interprets information and responds to that information as needed, Central Nervous System - the brain and the spinal cord - it processes and responds to all messages coming from the peripheral nervous system, Peripheral Nervous System - all the parts of the nervous system except for the brain and spinal cord-connects all parts of the body to the CNS, Nerve - a collection of nerve fibers through which impulses travel between your body and your CNS, Neuron - a nerve cell that is specialized to receive and conduct electrical impulses, Sensory Neurons - have specialized nerve endings called receptors that detect changes inside and outside the body, Motor Neurons - neurons that send impulses from the brain and spinal cord to other systems, Dendrites - short, branched extensions of the cell-neurons contain many of these that allow it to receive impulses from thousands of other cells, Axons - elongated extensions of a neuron - the end of these often have branches that allow information to pass to other cells , Somatic Nervous System - neurons that stimulate skeletal muscles-they control voluntary movements like writing, talking, smiling, or jumping, Autonomic Nervous System - main job is to keep all the body's function in balance- controls involuntary body functions like digestion and heart rate, Two Divisions of the Autonomic Nervous System - sympathetic nervous system and the parasympathetic nervous system, Brain - the largest organ of the nervous system-it is the main control center of the nervous system , Cerebrum - the largest part of your brain -controls voluntary movements and allows you to sense touch, light, sound, odors, taste, pain, heat, and cold, Left Hemisphere of the Cerebrum - controls activities such as speaking, reading, writing, and solving problems, Right Hemisphere of the Cerebrum - controls activities such as spatial thinking, processing music, and interpreting emotions, Cerebellum - processes sensory information from your body-it causes skeletal muscles to make adjustments so that you will stay upright, Medulla - controls involuntary processes such as blood pressure, body temperature, heart rate, and involuntary breathing, Spinal Cord - made of neurons and bundles of axons that pass impulses to and from the brain , Vertebrae - protective bones surrounding your spinal cord,

Nervous System

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