PSYCH261 Chapter Notes - Chapter 3.3: Peripheral Nervous System, Autonomic Nervous System, Olfactory Nerve
12 Oct 2018
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Document Summary
Spinal nerve: a peripheral nerve attached to the spinal cord. Afferent axon: an axon directed toward the central nervous system, conveying sensory information. Dorsal root ganglion: a nodule on a dorsal root that contains cell bodies of afferent spinal nerve neurons. Efferent axon (eff ur ent: an axon directed away from the central nervous system, conveying motor commands to muscles and glands. Cranial nerve: a peripheral nerve attached directly to the brain. Vagus nerve (vay guss: the largest of the cranial nerves, conveying efferent fibers of the parasympathetic division of the autonomic nervous system to organs of the thoracic and abdominal cavities. Olfactory bulb: the protrusion at the end of the olfactory nerve; receives input from the olfactory receptors. Somatic nervous system: the part of the peripheral nervous system that controls the movement of skeletal muscles or transmits somatosensory information to the central nervous system.
