exam 2 part 2 Flashcards
(32 cards)
grey matter
composed of neuronal cell bodies, dendrites, axonal terminals
white matter
bundles of axons
multipolar neurons
one axon and two or more dendrites, most motor neurons
bipolar neurons
one axon and one dendrite, sensory neurons, retina, olfactory, inner ear
unipolar neurons
single processes that bifurcates close to the stroma, long process extending peripheral, sensory neurons, dorsal root ganglia
anaxonic neurons
many dendrites but no axon, no action potential, regulate potentials of other neurons, retina
fibrous astrocytes
largest found in white matter, CNS
protoplasmic astrocytes
found in the grey matter, CNS
oligodendrocytes
small dark nucleus, creates myelin, CNS
microglial cells
phagocytosis, smallest, CNS
satellite cells
located in ganglia, PNS
Schawnn cells
produce myelin in the PNS
PNS divisions
sensory (afferent) and motor (efferent)
sensory afferent
sensory nerves, send signals to the CNS
motor efferent
composed of motor neurons, somatic and autonomic
somatic nervous system
voluntary movements
autonomic nervous system
involuntary movement, sympathetic and parasymathetic
sympathetic nervous system
fight/flight
parasympathetic nervous system
rest/digest
lymphocyte lifespan
weeks- years
neutrophil lifespan
6hours- few day
basophil lifespan
2-3 days
rubriblast
large cells, scant, deeply blue cytoplasm, most undifferentiated RBC
prorubricyte
second most undifferentiated RBC
