Neuron Signaling Flashcards
Synapse
Most communication between neurons happens a neurons close to each other that they are able to pass chemical signals from 1 cell to another
Presynaptic neuron
Neuron where signal originates
Post synaptic neuron
Receives the signal
What are vesicles?
Contains a bunch of neurotransmitters
What is myelin?
An insulating layer that surrounds the axons and neurons
composed of lipids
What does myelin do?
Myelin helps prevent action potential
What is action potential
Electrical signals that travel along axons
Benefit of myelinated axons
Travel faster, and more efficient
Nodes of Xavier
Allows sodium to travel to rejuvenate action potential and stop it from dying out.
Not myelinated
How is myelin formed?
Glial cells
What type of girl calls operate in the peripheral nervous system?
Schwann cells forms myelin
What type of myelin forms in the central nervous system?
Oligodendrocyte form myelin. One oligodendrocytes can produce dozens of internodes on multiple axons
What is white matter?
Because myelin is white myelinated axons appear white and make up what is known as the white matter of the brain
Neurons
Carry information from brain or spinal cord, and involved in regulating activity in muscles or glands
