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As far as I understand it, the purpose of the axon is to transmit the electrical impulses (information) of the presynaptic dendrites away from the cell body. The axon therefore acts as a sort of barrier between the postsynaptic dendrites, as it is kind of a one-way street from the cell body to the postsynaptic dendrites. As for why this is necessary, I have no clue. I would assume that if electrical information were to get caught up and stuck somewhere in the cell that it might be damaging to the neuron itself. The purpose of the axon would ultimately be to get the electrical information from the cell body to the postsynaptic dendrites so that chemical production on the neurotransmitter takes place.
Elroy Murazik
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What purpose does the myelin covering an axon serve?
insulating sheath that speeds up the transmission of impulses along an axon
What region of the cell secretes neurotransmitters?
an axon terminal
What is a role of an axon?
the function of the neuron's axon is to carry messages to other cells
Is and axon bulb and an axon hillock the same thing?
axon hillock = where cell body meets the axon axon bulb = end of the axon...lies very close to the dendrites of another neuron so impulses can pass over the synapse. AP Biology student *
What carries impulses away from the cell body?
The axon carries information from one neuron to another while the dendrites of a neuron receive information from other neurons
What purpose does the myelin covering an axon serve?
insulating sheath that speeds up the transmission of impulses along an axon
Axon diameter increases noticeably at the nodes of ranvier What purpose does this serve?
the axonal diameter increases due to the myelin wraped tightly around the axon.
How far would an action potential propagated in an unmyelinated axon?
The impulse will go to the terminal end of the axon. Other wise the very purpose of the innervation will be defeated.
What is the purpose of wallerian degeneration?
Degeneration of the axon and myelin sheath distal to the injury site caused by the lack of nutrients.
What region of the cell secretes neurotransmitters?
an axon terminal
What is a role of an axon?
the function of the neuron's axon is to carry messages to other cells
What does not belong axon terminal synaptic knob bouton axon collateral?
axon collateral
What is the purpose of myelin sheath?
This is a process that occurs in the CNS and PNS with axons. In the CNS oligodendrocytes surround the axons and in PNS schwann cells surround the axons. the myelin sheath will increase the speed of nervous conduction along the axon.
The axon is made up of?
what is the axon made of
The axon is connected to the soma by the?
axon hillock
What is a axon hillock?
An axon hillock is a special cell body that connects an axon to a neuron. It is the last place where propagated membrane potentials are transmitted to the axon.
What are the 3 main structures of a neuron?
Dendrites, Axon, Axon Terminal, and Cell Body
