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2 Neuroanatomy
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2.1 The Nervous System
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What does the central nervous system (CNS) consist of?
Brain and spinal cord -
What does the peripheral nervous system (PNS) consist of?
Cranial nerves (12 pairs), spinal nerves (31 pairs), ganglia, peripheral nerves, sensory receptors in skin, and enteric pleuses in small intestine. -
What does the sensory division of the nervous system do?
Receptors detect stimuli and relay information towards the CNS -
What type of pathway is the sensory division of the CNS?
Ascending afferent pathway (from PNS to CNS) -
What happens after sensory reception of stimuli?
Integration of information (analysis, storage, and perception) -
What is the final functional step of the nervous system?
Motor output for muscle contraction or glandular secretion -
What type of pathway is the motor division of the nervous system?
Descending efferent pathway (from CNS to PNS) -
Which nerve fibers are in the sensory (afferent) division?
Somatic and visceral sensory nerve fibers -
Which nerve fiber is in the motor (efferent) division?
Motor nerve fiber -
What are the two divisions of the nervous system that the motor division outputs to?
Autonomic nervous system and somatic nervous system
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