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Block 5 week 1 Dani > Introduction > Flashcards

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

What does this:
They perform many functions, including biochemical support of endothelial cells that form the blood–brain barrier, provision of nutrients to the nervous tissue, maintenance of extracellular ion balance, and a role in the repair and scarring process of the brain and spinal cord following traumatic injuries.

astrocytes