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Which channel maintains the concentration gradients of ions across a neuronal membrane?
Wiki User
∙ 11y ago
The sodium- potassium pump pump moving Na+ ions out and K+ ions in
Wiki User
∙ 11y ago
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What portion of a neuron forms the presynaptic neuronal membrane?
Terminal Button
During action potential transmission many ions cross the neuronal membrane at right angles to the membrane what travels along the membrane and acts as the signal?
neurotransmitters
Through the membrane of a resting neuron highly permeable to potassium ions its membrane potential does not exactly match the equilibrium potential for potassium because the neuronal membrane is?
Slightly permeable to sodium ions.
Site of the nucleus and most important metabolic area?
Neuronal cell body
What is the state when an electrical charge of a neuron is said to be at a resting potential?
The resting potential is the normal equilibrium charge difference (potential gradient) across the neuronal membrane, created by the imbalance in sodium, potassium, and chloride ions inside and outside the neuron.
What portion of a neuron forms the presynaptic neuronal membrane?
Terminal Button
Electrical change in the neuronal membrane that is transmitted along axon is?
Action potential is the term for an electrical change in the neuronal membrane transmitted along an axon. The axon is part of a nerve cell that conducts impulses.
During action potential transmission many ions cross the neuronal membrane at right angles to the membrane what travels along the membrane and acts as the signal?
neurotransmitters
What is the function of the neuronal membrane in a neuron?
Gwapo ko By: Michael Vincent T. Valencia
What are nerve cells part?
Axon, Nerve Ending (Presynaptic Terminals), Dendrites, Neuronal Membrane*, and the Cell Body. The parts within the cell body: Nucleus Golgi Apparatus Polyribosomes Neuronal membrane Mitochondrium Endoplasmic Reticulums (Smooth and Rough)
Through the membrane of a resting neuron highly permeable to potassium ions its membrane potential does not exactly match the equilibrium potential for potassium because the neuronal membrane is?
Slightly permeable to sodium ions.
Site of the nucleus and most important metabolic area?
Neuronal cell body
What is a Neuronal cell body?
The soma
What are neuronal varicosities?
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A nerve impulse results from?
It results from the opening of voltage-gated sodium ion channels, causing an influx of sodium ions (influx of positively-charged ions), depolarizing the neuronal membrane.
What cell membrane do action potentials travel along?
The membrane or resting potential is the difference in voltage within and outside the cell when that cell is at rest. In a typical neuron it is usually around -65mV, meaning the neuron is negatively charged relative to the extracellular space. This potential is due to various ions and the permeability of the neuronal membrane. When a neuron gets a signal from another neuron, this causes the concentration of various ions to change (some flow in, others out of, the cell). In some cases, the signal causes positive ions to flow into the cell, making the membrane potential less negative. Once it reaches a threshold, usually around -55mV, the cell "fires" or makes an action potential, which is when the membrane potential temporarily shoots up to around +40mV. This signal propagates down the length of the neuron and then passes that message on to other cells.
What is the importance in a reverberation neuronal pool?
there is no importance
