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Action potential
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What is an excitable nerve cell that sends electrical signals?
A neuron is an excitable nerve cell that sends electrical signals when stimulated
What is neural signal?
It is the explanation of signal transfer along a nerve cell or neuron.
What type of cell signals travel throughout the body?
neuronal cell signals travel throughout the body through the nervous system. The signal is electrical, and the fastest type of cellular signal. The electrical impluse is generated by action potentials.
How does the cochlea of the inner ear help you hear?
The cochlea has hairs cells that ride on the basilar membrane. These hair cells convert the mechanical vibration of sound waves into an electrical signal and excite the auditory nerve's 30 000 fibers. The auditory nerve transports the signal to the brainstem. Since each hair cell is on a different part of the basilar membrane, each hair cell is best excited by a different frequency. Thus, each nerve fiber carries auditory information about a different frequency to the brain.
What is the main function of a connecting neuron?
To take the signal from the sensory neurons to the motor neurons or other integrative neurons
What is a nervous transmission?
Sending an electrical signal along a nerve cell.
Why does myelination create speed?
This question could probably be asked more clearly. Myelinization of a nerve fiber helps the nerve's signalpropagate more quickly. Think of the nerve cell as a length of wire, and the myelin as the rubber insulation on the wire. Each nerve cell allows an electrical signal to pass down it's axon. If there is insulation around the nerve (myelin) then the signal is contained within the nerve cell, and passes quickly to the end of the nerve cell. Demyelinated nerve cells do not have this insulation keeping the electrical signal in the cell; so the signal can travel to adjacent cells. The net effect is that the signal either never reaches the end of the intended axon (such as with multiple sclerosis), or the signal takes longer to get there. Some nerve cells (grey matter, for example) are not intended to be myelinated. These cells are designed to act without insulation, so either the signal is supposed to travel to adjacent cells, or it is supposed to take relatively longer to reach the end of the axon.
What is an excitable nerve cell that sends electrical signals?
A neuron is an excitable nerve cell that sends electrical signals when stimulated
What is neural signal?
It is the explanation of signal transfer along a nerve cell or neuron.
What is the form of message carried by a nerve cell called?
impulse
How are messages carried through your nerves?
Nerve cells send electrical impulses called synapse. These electrical stimulations travel from cell to cell, up to the brain and back. Nerves also produce different types of chemicals to manipulate the synapse.
What are the two ways main ways in which neurons are able to react stimuli?
Nerves receive signals meaning that they can respond to a stimulus. Once a stimulus is received by a nerve cell it converts it to a neural impulse which passes along the nerve. Nerves are able to transmit impulses along the length of the nerve cell in the form of an electrical signal.
How is the nerve cell specialized?
Nerve cells carry impulses in the form of electrical currents, they are insulated by myelin to avoid the electrical current from 'leaking out'.
What is the electrical potential across the cell membrane of a nerve cell or muscle cell when the cell is not active?
resting potential
How does a signal cross from the axon of the neuron to the receiving cell?
When the electrical signal reaches the end of an axon, neurotransmitters are released. They travel across the synapse. Once they reach the receiving cell, they create a new electrical signal.
How does a signal crosses from the axon of a neuron to a receiving cell?
When the electrical signal reaches the end of an axon, neurotransmitters are released. They travel acrross the synapse. Once they reach the receiving cell, they create a new electrical signal.
What is action portential?
The most common type of action potential is the change in voltage down the axon of a neuron. In other words, it is an electrical signal that is sent down the axon of a nerve cell.
