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Do Now
• Give three examples of involuntary processes in the human body.
Autonomic Nervous System
Review• 3 types of muscle cells
• Parts of a neuron
Review: Human Nervous System
• 2 Parts:– C______ Nervous System– P______ Nervous System• __________ Nervous System• __________ Nervous System
– Sympathetic Division– Parasympathetic Division
Somatic
• Peripheral Nervous System
• Voluntary movement– Conscious control
• Skeletal muscle
Autonomic
• Peripheral Nervous System
• Involuntary movement– Not under conscious control
• Smooth Muscle• Cardiac Muscle
Divisions of Autonomic Nervous System
• Parasympathetic• Sympathetic
• Serve the same organs (except skin, some glands)
• Divisions work together and balance out
Parasympathetic
• “Rest and Digest” system
• Normal body maintenance and function
• Craniosacral system– Brain stem (medulla
oblongata), sacral region of spinal cord
• Internal organs
Sympathetic
• “Fight or Flight” system• Thoracolumbar system• Controls ALL parts of
the body– Skin, sweat, pupils, hair,
blood vessels, heart rate, breathing, etc.
Exit Ticket
• Write the following question and your answer on the sheet with your Do Now.
• Thinking ahead: Since the parasympathetic and sympathetic divisions of the nervous system serve (mostly) the same organs, how can their opposite effects be explained?
What’s Next?
• Anatomy and physiology of the spinal cord, muscles, organs involved in autonomic nervous system
• Propagation of an action potential down a neuron, pre and postganglionic
• Neurotransmitters• Reflexes• Regulation of somatic and autonomic nervous
system• Nervous System Disorders