Flashcards in Introduction Deck (18):
1
What makes up the CNS?
brain and spinal cord
2
What makes up the PNS?
cranial and visceral nerves and ganglia
3
What are the three glia cells?
oligodendrocytes, astrocytes, microglia
4
What do afferents do?
carry info to the CNS
5
What do efferents do?
carry info away from CNS
6
What is a collection of neural cell bodies in white matter?
nucleus
7
What do you call it when neuronal cell bodies are organized in layers?
lamina/cortex
8
What is an accumulation of neuronal cell bodies in the PNS?
ganglion
9
What do you call a collection of nerve fibers in the PNS?
nerves
10
What do you call a collection of nerve fibers in the CNS =tractus, fasciculus, funiculus, penduncle,lemniscus?
tracts
11
What do you call crossing over of nerve tracts from one side to the other?
commissure/decussation
12
What causes localization of symptoms or neurological defects?
commissure/decussation
13
What makes up a neuron?
soma, dendrites, axon, synapses
14
What is a neuropil?
tangle of dendrites, axons, glia
(a dense network of interwoven nerve fibers and their branches and synapses, together with glial filaments.)
15
What are the 2 types of ganglia?
Synaptic relay (sympathetic ganglia)
No synaptic relay (dorsal root ganglia)
16
What is this:
a glial cell similar to an astrocyte but with fewer protuberances, concerned with the production of myelin in the central nervous system.
oligodendrocyte
17
What are these:
glial cells derived from mesoderm that function as macrophages (scavengers) in the central nervous system and form part of the reticuloendothelial system.
microglia cells
18