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What is the amount of stimulation required to intiate a nerve impulse called?

Neuron has to be stimulated to the point of it's threshold in order for an action potential to be initiated and transmitted


Describe how the nerve impulse travels in the heart?

The brain can influence the heart in two ways. Sympathetic and parasympathetic stimulation. Parasympathetic stimulation of the heart is through the vagus nerve. Sympathetic stimulation of the heart is via cervical and thoracic splanchnic nerves. The heart has its own pacemaker cells, so the brain only changes the rate and contractility of the heart.


How does mechanical stimulation of the nerve cause an action potential?

Mechanical stimulation of a nerve physically opens ion channels in the cell membrane, allowing ions such as sodium and potassium to flow across the membrane. This creates a change in the electrical charge inside the nerve cell, leading to depolarization and generation of an action potential.


What is quicker a nerve impulse or a hormone?

nerve impulse


Which travels quicker through the body a nerve impulse or a hormons?

a nerve impulse


When the receptor have registered a the energy is converted to a electrochemical impulse?

Yes, when a receptor detects a stimulus, it triggers an electrochemical impulse to be sent along a nerve cell. This impulse travels to the brain where it is interpreted as a specific sensation or perception.


What is transcutaneous electrical nerve stimulation also called?

Electrical nerve stimulation


What are the sources of stimulation that start a nerve impulse?

Sources of stimulation that can start a nerve impulse include chemical signals (neurotransmitters released at synapses), physical stimuli (such as pressure or temperature changes acting on sensory receptors), and electrical signals (generated by neighboring neurons or external electrical sources). These stimulations can trigger the opening of ion channels in the neuron's membrane, leading to changes in membrane potential and initiation of an action potential.


How does a nerve impulse follow all or nothing principle?

How does a nerve impulse follow the all-or-nothing principle???


What are the different forms of energy that are transferred enabling us to hear the radio?

There is a transfer from Radio waves (electrical energy) to Mechanical energy (sound). When you listen to a radio, the electromagnetic energy of the broadcast is converted to electrical current, also electromagnetic energy, which is converted to mechanical energy by the speaker. The vibration of the speaker (mechanical energy) is converted to sound energy (pressure waves) which travel through the air to your ear and is converted first to mechanical energy in your middle ear and then to pressure in a fluid in your inner ear. That fluid pressure wave is converted to mechanical energy as it stimulates the hair cells in your inner ear and they release a nerve signal. The nerve signal is electrical energy which it converted to chemical energy between each nerve sell and then back to electrical energy to flow through the nerve cell - so the nerve signal is electro-chemical energy. And that is processed by your brain to let you hear the sound of your radio.


What pathway does a nerve impulse follow after initiated into a receptor?

nerve my a$$ nerve


Is an action potential necessary for a nerve impulse to occur?

Yes, an action potential is needed for a nerve impulse to occur.