Neuron Flashcards
What’s a nurse cell?
A support cell
How many nervous system cells are nurse cells?
~95%
What’s another name for a nurse cell?
Neuroglial cell
Name the parts of the neuron
Soma
Dendrites
Axon
Schwann cells
What is the soma?
The body of the cell
What are dendrites?
Extensions that receive signals and carries them into the soma
What is the axon?
An extension that carries signals away from the soma
What are Schwann cells?
Insulator for cells that carry signals for long distances (carries signals faster)
Does every axon have Schwann cells?
Nope
What are other forms neurons?
Unipolar
Bipolar
Multipolar
What is a neuron?
A nervous system cell that is capable of creating and transmitting an electro-chemical signal
What is a myelin sheath?
A collection of Schwann cells
What does a myelin sheath do to signals
Signals are able to travel 50x faster
What is anything myelinated called?
White matter
What is anything not myelinated called?
Grey matter