CDIS 421 Neuroanatomy Study Guide
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Chromatolysis - Occurs when a cell is injured and the cell body swells
and shifts its nucleus to the periphery.
Commissural fibers - Fibers that connect one hemisphere to another.
Saltatory conduction - Occurs when an impulse ju...
Accessory XI - ✔✔Head turning and shrugging shoulders (motor).
Acetylcholine - ✔✔A neurotransmitter that enables learning and memory
and also triggers muscle contraction.
Action potential - ✔✔A nerve impulse; a stimulus causes sodium gates to
open; +30/40mV.
Afferent - ✔✔Conduction of nerve impulses toward the CNS (sensory).
Agnosia - ✔✔The inability to recognize what you are touching even though
you can feel it.
Hypoglossal XII - ✔✔All of the tongue muscles, intrinsic and extrinsic, are
innervated by the hypoglossal XII.
Anterolateral system (ALS) - ✔✔These fibers ascend in the anterior and
lateral aspects of the spinal cord.
Dorsal and ventral roots - ✔✔Dorsal roots contain only sensory fibers and
the ventral roots contain only motor fibers.
Alveus of hippocampus - ✔✔A thin layer of white matter covering the
ventricular surface of the hippocampus.
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