An Impulse
An Impulse
The message travels through the axon and Schwann cells (which make up the axon) as an electrical message. When it reaches the dendrite, it is converted into a chemical message where it can be picked up by another neuron.
The message that travels through a neuron is an electrical impulse called an action potential. It is generated when the neuron is stimulated and travels along the neuron's axon, facilitated by the movement of charged ions. This ultimately allows the neuron to communicate with other neurons or target cells.
An Impulse
A nerve impulse travels from your leg to your brain through sensory neurons. Once in the brain, the impulse is processed, and a response is generated. The response travels back to your leg through motor neurons to initiate movement or action.
The electrical message that travels along a neuron is called an action potential. It is a brief change in electrical voltage that travels down the length of the neuron, allowing for communication between neurons and the transmission of signals throughout the nervous system.
Okay, information is received through the dendrites, and then moves on the the cell body. From there, the cell's axon passes the message on to other neurons or to muscles or glands.
The message in a neuron starts at the dendrites, which are the branch-like extensions that receive signals from other neurons. When these signals are strong enough to reach a certain threshold, they trigger an action potential that travels down the axon. This electrical impulse then propagates to the axon terminals, where it can communicate with other neurons or target cells.
The messages are carried by chemical messenger across the neurons (synapses). It is actually an enzyme which is released from one end of the synapse and which triggers the electrical message to pass through each cell from side to side.
A message travels through a neuron in the following order: dendrites receive the signal, the signal is passed through the cell body (soma), travels down the axon, and finally reaches the synaptic terminals where it is transmitted to the next neuron.
Neurons are pathways for electrical messages to pass through. Their main function is to pass a message from one neuron to another. As a whole, they transmit these messages between a receptor (something that picks up a stimulus. A stimulus includes things such as temperature, pressure, pain etc.), the brain and an effector (something which carries out the response to the stimulus). There are three main types of neurons: Sensory neurons - receive message from receptor and transmit it to the -> Interneurons - receive message from sensory neurons and pass it on to the brain*. The brain responds and the interneurons pass the message on to the -> Motor neurons - receive message from interneurons and pass it on to an effector. *In the case of a reflex arc, where there is an unconscious response (e.g. touching a hot object) the message will bypass the brain and go straight from receptor to sensory to interneuron to motor to effector.
What they relay is whether of not they were 'on' or 'off' and how often; and this occurs as an action potential firing frequency. There is no message in the sense that neurons might pass on complex messages, like an email for instance; or store memories of events and facts. No one neuron can do anything like that. It takes many neurons working together to achieve this.