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Unformatted text preview: 4/6/2010 1 PSC1 Spring 2010, Dr. Liat Sayfan t The body communication networks The nervous system The endocrine system t Neurons structure Neurons in action Neural communication t Neurotransmitters and drugs t Central nervous system (CNS) brain spinal cord t Peripheral nervous system (PNS) nerves throughout body SOMATIC AUTONOMIC t voluntary t Signals from sensory organs t Motor commands to muscles t Automatic t Signals to and from internal organs and glands t Regulates internal states AUTONOMIC Sympathetic Action Parasympathetic: reduces arousal + returns body to pre-action state Nervous System Peripheral Spinal Cord Brain Autonomic (automatic) Somatic (voluntary) Sympathetic (activating) Parasympathetic (calming) Central 4/6/2010 2 The body communication networks: 2) The Endocrine System 2) The Endocrine System 2) The Endocrine System 2) The Endocrine System t Glands growth reproduction t Secret Hormones t Basic units of the nervous system t Specialized for communication Electrical impulses Chemicals release t Sensory neurons (body b nervous system) t Motor neurons (nervous system b body) t Interneurons (connectors) 1. Provide nutrients to the neurons 2. Remove waste 3. Form the myelin sheath 4. Important in the development of the embryo nervous system 5. Some Glia detect neural signals & transmit it to other glial cells t How do neurons work?...
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- Spring '09