Introduction

Question 1

What makes up the CNS?

Answer 1

brain and spinal cord

Question 2

What makes up the PNS?

Answer 2

cranial and visceral nerves and ganglia

Question 3

What are the three glia cells?

Answer 3

oligodendrocytes, astrocytes, microglia

Question 4

What do afferents do?

Answer 4

carry info to the CNS

Question 5

What do efferents do?

Answer 5

carry info away from CNS

Question 6

What is a collection of neural cell bodies in white matter?

Answer 6

nucleus

Question 7

What do you call it when neuronal cell bodies are organized in layers?

Answer 7

lamina/cortex

Question 8

What is an accumulation of neuronal cell bodies in the PNS?

Answer 8

ganglion

Question 9

What do you call a collection of nerve fibers in the PNS?

Answer 9

nerves

Question 10

What do you call a collection of nerve fibers in the CNS =tractus, fasciculus, funiculus, penduncle,lemniscus?

Answer 10

tracts

Question 11

What do you call crossing over of nerve tracts from one side to the other?

Answer 11

commissure/decussation

Question 12

What causes localization of symptoms or neurological defects?

Answer 12

commissure/decussation

Question 13

What makes up a neuron?

Answer 13

soma, dendrites, axon, synapses

Question 14

What is a neuropil?

Answer 14

tangle of dendrites, axons, glia

a dense network of interwoven nerve fibers and their branches and synapses, together with glial filaments.

Question 15

What are the 2 types of ganglia?

Answer 15

Synaptic relay (sympathetic ganglia) 
No synaptic relay (dorsal root ganglia)

Question 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.

Answer 16

oligodendrocyte

Question 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.

Answer 17

microglia cells

Question 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.

Answer 18

astrocytes