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Nervous system

Anatomy and Physiology I

What I the function of the nervous system? *important function? Provides communication throughout the body along with the endocrine system. -detect changes in environments -evaluate information, initiate response. * maintaining homeostsis
What are the structures of the nervous system? -Brain -Spinal cord -Nerves
What are the parts of the Central Nervous System (CNS)? -Brain and Spinal cord
What are the responsibilities of the CNS? -Integrates incoming sensory information -Evaluates the information -Initiates an ongoing response
What are the parts of the Peripheral Nervous System (PNS)? -Cranial nerves and Spinal nerves
How many cranial and spinal nerves does a human being have? -12 pairs of cranial nerves -31 pairs of spinal nerves
What are the two system parts to the PNS? -Somatic nervous system (voluntary control) -Autonomic nervous system (involuntary control)
What is the peripheral nervous system made up of? -Nerves -Ganglia
What are the two types of nerves? -Afferent -Efferent
What is an Afferent nerve type? -Carries incoming information, sensory impulses towards the brain and spinal cord.
What is an Efferent nerve type? Outgoing motor impulses away from the brain and spinal cord and toward the muscles.
What kinds of nerves does the Autonomic nervous system have? -Sympathetic nerves -Parasympathetic nerves
What are the functions and locations of sympathetic nerves? -Pathways that exit the middle portions of the spinal cord -Prepares the body to meet the immediate threats to the internal environment -Fight or flight response
What are the functions and locations of the parasympathetic nerves? -Pathways that exit at the brain or lower portions of the spinal cord -Coordinates the bodies normal resting activities -"Rest and Repair" division
What are the two cell types of the nervous system? -Neuron -Glia
What are the parts to the Neuron? (7 parts) -Cell body -Axon -Myelin sheath -White matter -Gray matter -Dendrites -Synapse
Created by: cchase0510



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