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What two factors maintain the unequal distribution of ions while the neuron is at rest?
Wiki User
∙ 11y ago
strangely worded question i guess it is someone's homework. I suppose
Factor 1: The neuron membranes have proteins which actively pump ions to create a potential (The Sodium/Potassium Pump) and
Factor 2: charged ions slowly leak out through the cell membrane.
Wiki User
∙ 11y ago
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What condition is neuron in when the outside of the neuron has a net positive charge and the inside has net negative charge?
This is called the resting potential (inactive state) of the neuron. However, when a neurotransmitter binds to receptors, electrical stimulus is applied, etc. to induce an opening of ion channels in the membrane of the neuron, positive ions rush into the neuron from the outside to the inside, and result in a sharp increase of the positive charge density (due to more positive ions) inside the neuron. Beyond a certain threshold, this can induce the creation of an action potential, causing the neuron to fire. After the action potential is created, and the neuron fires, there is a short refractory period where the neuron cannot be fired again due to stimuli, when positive ions are pumped back out of the neuron, negative ions are brought into the neuron, and then the ion channels close, leaving the neuron in a polarized state, and returning it to a resting potential.
A neuron reaches its trigger point when?
Action potential is nerve impulse triggered when a neuron reaches its threshold, or trigger point for firing. Threshold trigger point for a neuron's firing about negative 50 millivolts.
Why is the sodium potassium pump important?
because without this pump the inside of neuron will stay + and outside -( check that, I am not that sure) and the neuron will not be able to function, as a result you will not feel any pain or even feel anything. read the section that talks about neuron's function...
How would a chemical that prevents the opening of voltage-regulated Na channels affect the function of a neuron?
neuron will only be capable of producing graded potentials
Is a neuron a molecule?
A Neuron is the basic functional structure of a nerve. It's not a molecule, more likely the cell that allows the synapse to occur through the nervous system.
How do you maintain a healthy neuron?
see it with your doctor
What does astrocytes oligodendrocytes and microglia have in common?
they are all non neuron cells that serve to maintain the CNS in their different ways
Where is the neuron?
The Inter-neuron (also known as the local circuit neuron, relay neuron or the association neuron) is the neuron which connects the afferent and the efferent neurons in the neural pathways.
Do sodium ions move to inside of neuron in a nerve impulse?
No. Three sodium ions are pumped out of the neuron by the sodium-potassium pump and two potassium ions enter the cell. This way you maintain a slightly negative charge just inside the cell membrane.
Specialized cell that makes up the nervous system?
The cells that makes up the nervous system is the Inter-neuron (circuit neuron), sensory neuron and motor neuron.
Why is a neuron called an interneuron?
A neuron is called a inter-neuron because that specific neuron takes impulse from one neuron to a next neuron. For example your sensory neuron sends a impulse that you had felt a hot object. It goes through the spine to a inter-neuron to a motor neuron (this processes is called a reflex). Then the motor neuron tells your muscles in your hand to move
Define relay neuron?
a relay neuron is the neuron that picks up the message from the sensory neuron and delivers it to the motor neuron in the spinal cord or the brain
What is the function of relay neuron?
A relay neuron is the neuron that picks up the message from the sensory neuron and delivers it to the motor neuron in the spinal cord then to the brain.
What is the 3 types of neuron?
one type of neuron is the motor neuron
What is intermixed neuron?
a neuron which recieve both messages from afferent and efferent neuron...
What type of neuron connects to a muscle?
A motor or efferent neuron.
What is a neuron impulse?
it is neuron impulse
