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When the neural membrane (neurolemma) is at rest it is said to have resting potential, polarized, and has a negative charge inside.
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∙ 16y ago
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Membrane surrounding an entire nerve?
Epineurium is a tough fibrous sheath that covers the whole nerve.
How is nerve impulse conducted along a myelinated nerve fiber?
In non-myelinated axons, the nerve impulse is going to be produced when the action potential accross a membrane makes a wave of depolarization followed by a wave of repolarization. With the absence of the myelin, the impulse is transmitted continuously throughout the membrane. In a non-myelinated nerve, once an end of the cell, the dendrite, is depolarized, the depolarization a.k.a., the action potential, moves along the nerve membrane, and the area of membrane immediately behind the depolarized section becomes repolarized.
What is the ability of nerve and muscle cells to produce changes in membrane voltage?
excitablity
What is the most common type of phospholipids in the cell membrane of nerve cells?
PHOSPHATIDYLCHOLINE
What is the name of the membrane that surrounds the vacuole?
It is called the vacuolar membrane.Sometimes it is referred to as the vacuole membrane. The membrane round the large central vacuole in plants it is also called the tonoplast.
What is The depolarization and repolarization of a neuron membrane called?
This process is called nerve conduction.
What is a Thin outer covering of a nerve?
I think it's called the membrane? LOL!
Membrane surrounding an entire nerve?
Epineurium is a tough fibrous sheath that covers the whole nerve.
What is resting potential?
A rest potential is the potential difference between two sides of the membrane of nerve cells when the cell is not conducting an impulse. =)
What is the process called when sodium NA is pumped out of a nerve cell?
during action potentials, sodium and potassium cross the membrane of the synapse after the threshold of membrane potential is reached. There, sodium leaves the synapse and the membrane potential is now positive. this is known as depolarization. then during repolarization, the sodium channels close and the potassium channels open to stabilize the membrane potential. during this time, a second action potential cannot occur and this is an evolutionary advantage because it allows rest in the nerve cells and it allows the membrane potential to equalize.
What would a substance that decreases membrane premeability to sodium increase or decrease the probability of generating a nerve impulse?
Allowing more sodium ions into a nerve generates a nerve impulse. so decreasing membrane permeability of sodium would decrease the probability of generating a nerve impulse.
What chemicals are used to transmit impulses through the neurons?
the transmission of a nerve impulse along a neuron from one end to the other occurs as a result of chemical changes across the membrane of the neuron. The membrane of an unstimulated neuron is polarized that is there is a difference in electrical.
Depolarization of the nerve membrane begins with?
opening of sodium channels
When the nerve is at rest the inside is?
negative
What is the Light sensitive membrane that connects the optic nerve to the brain?
Retina.
A basilar membrane would be found in?
Auditory nerve
Functions of the nuclear membrane?
Membrane or barrier that separates the nucleus from the rest of the cell.
