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Chapter 13

QuestionAnswer
a CNS center with discrete anatomical boundaries nucleus
a group of neuron cell bodies in the CNS that share a common function center
a bundle of axons within the CNS that share a common origin, destination, and function tract
a group of tracts found within a specific region of the spinal cord column
centers and tracts that connect the brain with other organs and systems in the body pathways
an anatomically distinct collection of sensory or motor neurons within the PNS ganglia
a bundle of axons in the PNS nerve
ascending, afferent sensory
descending, efferent motor
the two systems of the efferent division somatic and autonomic nervous system
the two divisions of the autonomic nervous system sympathetic and parasympathetic division
surround neuron cell bodies in ganglia satellite cells
surround all axons in PNS schwann cells
myelinate CNS axons oligodendrocytes
maintain blood-brain-barrier; provide structural support astrocytes
removes cell debris, wastes, and pathogens in CNS microglia
line brain ventricles; assists in producing cerebrospinal fluid ependymal cells
most sensory neurons are? pseudounipolar
most motor neurons are multipolar neurons
external environment receptors (touch, temp, pressure) exteroceptors
internal environment receptors (position and movement of skeletal muscles and joints) proprioceptors
internal environment receptors (digestive, respiratory, cardiovascular) interoceptors
the ability of a plasmalemma to conduct electrical impulses excitability
Created by: qclemenz
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