Top 20 Doctor insights on: Describe how a nerve impulse is transmitted along to axon

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Describe how a nerve impulse is transmitted along to axon?

Describe how a nerve impulse is transmitted along to axon?

It's complex: 1. Polarization of the neuron's membrane; 2. Resting potential gives the neuron a rest; 3. Action potential: sodium ions move inside the membrane; 4. Repolarization: potassium ions move outside, and sodium ions stay inside the membrane; 5. Hyperpolarization: more potassium ions are on the outside than there are sodium ions on the inside; 6. Refractory period puts everything back to normal. ...Read more

Nerve (Definition)

The brain and spinal cord communicates with what is occurring in the internal organs and limbs by nerve fibers where are like electrical wires with insulation (myelin) and the "copper" (axon). Within brain and spinal cord these nerves connect to other nerves via synapses on both axons and dendrites. A nerve can carry information regarding sensations, and ...Read more


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Describe what is nerve impulse?

Describe what is nerve impulse?

Electrical transmiss: Information travels down a nerve as an electrical impulse. At the end of the nerve, the connection with nerves, muscles or glands is called a synapse, by chemicals called transmitters. ...Read more

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Can you tell me how a light touch stimulates a nerve impulse?

Can you tell me how a light touch stimulates a nerve impulse?

All Feeling: Has to travel through nerves. You can't feel anything without the nerves, so any sensation felt is due to nerves that send signals to spinal cord and brain. ...Read more

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What factors influence the time necessary for a nerve impulse to be transmitted?

What factors influence the time necessary for a nerve impulse to be transmitted?

Milliseconds: Nerve impulses in arms and legs typically travel at speeds over 40-50 meters/sec, as measured by EMG equipment. Nerve size, local temperature, chemical balance, especially sodium and potassium, can all affect appropriate nerve velocity speeds. ...Read more

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If the immune system attacked killed the neurons cell body axons dendrites nerves throughout the body is it possible and what diagnosis would this be?

If the immune system attacked killed the neurons cell body axons dendrites nerves throughout the body is it possible and what diagnosis would this be?

Complicated: This description is quite improbable and sounds as it the person may be deceased. If you are having neurological deficiencies stronglysuggest that you see a neurologist and be evaluated. Good luck. ...Read more

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With peripheral neuropathy, what conditions could cause damage to both axons and myelin as shown in nerve conduction tests? And can it be reversed?

With peripheral neuropathy, what conditions could cause damage to both axons and myelin as shown in nerve conduction tests? And can it be reversed?

Brief explanation: Most neuropathies affect myelin coverings (Schwann cell), but an advancing axonal neuropathy can secondarily affect the myelin. This is not simple, and you would be far better served by a Concierge consult, and/or find an experienced Medical School neurologist. Reversibility depends on causes and appropriate therapy. ...Read more

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What exactly is brain neurophysiology and how does it change in an addiction?

What exactly is brain neurophysiology and how does it change in an addiction?

Biology of the brain: There are areas of the brain that become more active due to addictions. Neurophysiology can study the activity of these areas via eeg, mmg, fmri or other monitoring methods. ...Read more

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How can novocain (procaine) works on axon membrane?

How can novocain (procaine) works on axon membrane?

Sodium channels: Local anesthetics work on the neuron's sodium channels inhibiting ion exchange and therefore depolarization of the nerve. ...Read more

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What are axons?

What are axons?

Axons: Are nerve fibers that come out of nerve cells (Neurons) & conduct electrical impulses away from the neurons, to transmit information to different tissues. ...Read more

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What is a axon test? How is it done?

Concussion test: It is a concussion test that can accurately diagnose concussion injuries. The test uses well known playing cards and measures reaction time and memory. ...Read more

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What is the axon and what does it do?

What is the axon and what does it do?

Axon: Nerve fiber projecting from nerve cell (Neuron), conducting electrical impulses to send information to other neurons & muscles & glands. ...Read more

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What is the function of an axon terminal?

What is the function of an axon terminal?

Transmission: The axon transmits the electrical signal from the nerve to the next nerve or a muscle through the neuromuscular junction. ...Read more

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Which diseases or disorders affect axons?

Which diseases or disorders affect axons?

Numerous: If the axon affected is located in arms or legs, this is a peripheral neuropathy, if in spinal cord, perhaps a myelopathy, and brain and eyes, neuritis, encephalopathy. ...Read more

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What are the symptoms of axon degeneration?

What are the symptoms of axon degeneration?

VARIES: Several peripheral neuropathies are considered "axonal" problems, and these include alcohol nutritional, diabetes, solvent poisoning, porphyria, amyloidosis, but small fibre axonal problems may be seen in sarcoid, sjogren's, lupus, paraproteinemias, celiac disease. Symptoms include pain, numbness, weakness, inability to discern hot/cold. Perhaps problems with balance. ...Read more

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What is the role of the axon in learning and development?

Arms and legs: The neuron is the cell of the brain that is involved in learning and development. They need to be connected to other neurons to communicate. The axon is the arms or legs of the neuron that connect one neuron from another one. Without them, no communication and no learning and development. ...Read more

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What is axonopathy of small cutaneous sensory axons? And what are treatments/prognosis?

As above: Not every problem can be answered without. Evaluation; see your PCP for evaluation and advise. ...Read more

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