NERVOUS SYSTEM - Neurons & Their Parts Flashcards
1
Q
Soma (Perikaryon)
A
Neuron cell body; contains nucleus.
2
Q
Dendrites
A
Receive signals and send them toward the soma.
3
Q
Axon
A
Conducts electrical impulses away from the soma.
4
Q
Axon hillock (Trigger zone)
A
The cone-shaped first portion of the axon.
5
Q
Axon terminals (Telodendria)
A
End of the neuron.
6
Q
Synaptic knobs
A
Contain neurotransmitters.
7
Q
Myelin sheath
A
Protects, insulates, and speeds impulse transmission.
8
Q
Node of Ranvier
A
Gaps in the myelin sheath; enable saltatory conduction (impulses jump between nodes).
