nervous tissue Flashcards
1
Q
what does nervous tissue consist of
A
neurons and support cells(glia), glia outnumber neurons 10:1
2
Q
what are 3 types of neurons
A
multipolar(most common) = many dendrites and one axon
bipolar = one dendrite one axon
pseudounipolar = short process gives rise to axn I both directions
3
Q
what are neurons made up of
A
cell body, dendrites and axon
4
Q
what are the principal glia of the CNS and their functions
A
astrocytes: support, ion transport, induce blood brain barrier
oligodendrocytes: produce myelin in brain and spinal cord
microglia: provide immune surveillance
5
Q
what are the principal glia of the PNS and their functions
A
shwann cells: produce myelin and support axons
