Structure of a Motor Neurone

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Cell Body
most organelles present
1 of 7
Dendrites
extensions of the cytoplasm and cell surface membrane - synapse with many other neurones
2 of 7
Axon
single long extension of cytoplasm - transmit the nerve impulses to effectors
3 of 7
Schwann Cell
cells wrapped around the axon, leave gaps between. Secrete a lipid based material called myelin
4 of 7
Myelin
insulates the axon - prevents ion movement into/out of the axon (sodium ions and potassium ions)
5 of 7
Nodes of Ranvier
gaps between schwann cells - only places where ions can move in and out of axon
6 of 7
Axon Terminals
branded ends of the axon - form synapses with the effectors (muscles/glands)
7 of 7

Other cards in this set

Card 2

Front

extensions of the cytoplasm and cell surface membrane - synapse with many other neurones

Back

Dendrites

Card 3

Front

single long extension of cytoplasm - transmit the nerve impulses to effectors

Back

Preview of the back of card 3

Card 4

Front

cells wrapped around the axon, leave gaps between. Secrete a lipid based material called myelin

Back

Preview of the back of card 4

Card 5

Front

insulates the axon - prevents ion movement into/out of the axon (sodium ions and potassium ions)

Back

Preview of the back of card 5
View more cards

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