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When an axon is not conducting a nerve impulse and there is more sodium outside the axon and more potassium inside the axon it is referred to as what?
When an axon is not conducting a nerve impulse and there is a higher concentration of sodium ions outside the axon and a higher concentration of potassium ions inside, it is referred to as the resting potential. During this state, the axon's membrane is polarized, with a negative charge inside relative to the outside. This resting potential is crucial for the generation of action potentials when the neuron becomes activated.
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When an axon is not conducting an impulse is known as?
When an axon is not conducting an impulse, it is said to be in a resting state. This is when the axon maintains a negative charge inside relative to the outside.
There is a greater concentration of na plus and there is a greater concentration of k plus in the cell?
There is a greater concentration of Na plus outside and there is a greater concentration of K plus inside the cell. When the stimulus is delivered, the permeability of the membrane is changed, and Na plus diffuses into the cell, initiating the depolarization of the membrane.
What type of ions does the sodium-potassium pump pick up on the outside of the cell?
Sodium ions
What causes the inside of neuron becomes positive?
Outside a neuron, there are mostly sodium ions but some potassium ions. Inside the neuron, there are only potassium ions. Since both sodium and potassium are positive ions, and they are in a higher concentration outside the cell, that makes the outside have a more positive charge than the inside. But for all intents and purposes, the outside is positive, and the inside is negative. When the sodium ions (Na+) rush into the cell during depolarization, it causes the concentration of positive ions inside the cell to go WAY up, making the inside more positive than the outside. This means that the outside is now negative and the inside now positive.
Why resting membrane potential value sodium is closer to equilibrium of potassium?
The resting membrane potential value for sodium is closer to the equilibrium of potassium because the sodium-potassium pump actively maintains a higher concentration of potassium inside the cell and a higher concentration of sodium outside the cell. This leads to a higher permeability of potassium ions at rest, resulting in the resting membrane potential being closer to the equilibrium potential of potassium.
What is a polarized neuron?
A neuron that is polarized is also at rest potential. At this stage it is not conducting an impulse and has sodium ions on the outside and potassium ions on the inside.
When an axon is not conducting an impulse is known as?
When an axon is not conducting an impulse, it is said to be in a resting state. This is when the axon maintains a negative charge inside relative to the outside.
When a muscle contracts it does what?
In order for a muscle to contract, the brain sends a nerve impulse to the muscle it wants to contract. The nerve impulse triggers the potassium inside the muscle fiber cell to switch places with the calcium outside the cell wall, thereby feeding the cell and contracting the muscle. A second nerve impulse from the brain triggers the calcium to switch places with the potassium, releasing the contracted muscle.
Why is potassium important?
Potassium is an essential dietary mineral and electrolyte. The term electrolyte refers to a substance that dissociates into ions (charged particles) in solution, making it capable of conducting electricity. Normal body function depends on tight regulation of potassium concentrations both inside and outside of cells.
What system controls the reactions to the outside world?
nerve impulse
What is the relationship between the electric potential outside a conducting sphere and its potential at the surface?
The electric potential outside a conducting sphere is the same as the potential at its surface.
What outside item contains potassium?
BANANAS!!!!!!!!!!!
What are impulses that are sent down a neuron?
These impulses are called Nerve impulse. Nerve impulse is wave of electrochemical change tha travels along the length of neuron. Electrical potentail of neuron when it is in unstimulated condition is -70 millivolts. In this state outside the membrane of neuron, concentration of positive ions is more than the inside of membrane. Inside the membrane potassium ions are more than sodium ions while outside the membrane sodium ions are more than the potassium ions present there. This balance is maintained by sodium-potassium pumps through which three sodium ions move outside and two potassium ions move inside the membrane at a time. During this activity ATPase (enzyme) breaks down the ATP into ADP and phosphate then energy is released. When a neuron is stimulated, stimulus causes its membrane to depolirized (sodium ions move inside and potassium ions move outside the membrane). The adjacent parts of membrane are also affected by this depolarization. The change travels along the neuron while the prior parts of membrane return to their original state.
There is a greater concentration of na plus and there is a greater concentration of k plus in the cell?
There is a greater concentration of Na plus outside and there is a greater concentration of K plus inside the cell. When the stimulus is delivered, the permeability of the membrane is changed, and Na plus diffuses into the cell, initiating the depolarization of the membrane.
Does potassium help with nerve function?
both Potassium and Sodium are necessary for nerves to function because the action of a nerve impulse travelling along a nerve axon involves a successive moving of na and k ions between the inside and outside of the axon. When a nerve impulse is initially triggered by a summation of voltages from the input dendrites, na and K ions are caused to switch places at one small area of the beginning of the axon which accomplishes a small voltage there. That voltage causes the same thing to happen just next to that site and so on down the length of the axon. As this impulse travels along the axon, the previous switching reverses back to the normal state ready for another impulse to fire. This is similar to a line of dominos knocking each next one down, except that each one stands back up after knocking the next one down. That's approximetely how a nerve cell works to send impulses. But if your question is something like do I need to take potassium supplements then that's something you would have to ask a doctor.
What is the electric field inside and outside a conducting hemisphere shell?
Inside a conducting hemisphere shell, the electric field is zero because the charges redistribute themselves to cancel out any electric field. Outside the conducting hemisphere shell, the electric field behaves as if all the charge is concentrated at the center of the hemisphere.
Where does the sodium potassium pump move sodium and potassium to?
The sodium-potassium pump uses ENERGY to move ions, it is a form of active transport. It moves sodium ions, generall highly concentrated outside the cell, to the outside, and potassium ions highly concentrated within the cell, within. Thus, it moves ions from areas of low concentration to high concentration, a process unlike diffusion and osmosis.....it requires ATP or the energy currency of a cell.
