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What is the portion of an neuron that has the highest density of voltage-gated sodium channels and is where an action potential is initiated?
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How fast does an action potential travel down a myelinated nerve?
An action potential is not passively propagated down the axon. There have to be ion channels along the axon or else the action potential will gradually decay. So the the rate of that the action potential 'travels' is dependent on the passive property called the length constant of the axon (factor in capacitance, axon diameter) plus the density of ion channels.
What happens to the density of a gas sample collected in a balloon as the sample is heated?
The air becomes less dense as it expands making the balloon appear to self inflate.
Why is agricultural density important in geography?
Agricultural Density is important in geography mainly for economic reasons. A higher agricultural density suggests that the available agricultural land (ie. farms) is being used by more and may reach its output limit sooner than a nation that has a lower agricultural density. In contrast, an area with a low agricultural density actually has a higher potential for agricultural production. Economically, a low agricultural density would be favorable for future growth.
What is the correct sequence of events that follows a threshold potential?
§Labor and management§Productivity§Wage levels§Training needs§Local infrastructureMeasuring site potential in step 3 involves determining whether a site can supply adequate resources needed to carry out the proposed business activity. Key issues include:•For many companies the most important resources will be labor and management.•The productivity and wage levels of local labor and managers.•The cost of training local managers, which can mean substantial investments of time and money.•And the efficiency of local infrastructures, including roads, bridges, airports, seaports, and telecommunications systems.
What is the function of the axon hillock?
An axon hillock is part of a neuron that acts as a bridge between the cell body and the axon. Electrical impulses from the dendrites and cell body are summed at this point, which is then sent down the axon.
How fast does an action potential travel down a myelinated nerve?
An action potential is not passively propagated down the axon. There have to be ion channels along the axon or else the action potential will gradually decay. So the the rate of that the action potential 'travels' is dependent on the passive property called the length constant of the axon (factor in capacitance, axon diameter) plus the density of ion channels.
Where is the density of voltage gated sodium channels the greatest?
Perhaps the neuromuscular junction (NMJ).
Why don't some organisms reach their full biotic potential?
things such as Limiting Factors,Predator-Prey Relationship,Density-Independent Factors and Density-Dependent Factors cause organisms to not be able to reach their full biotic potential.
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.
What are chemical properties of an element?
it would be atomic mass, atomic number, density, melting and boiling point, standard potential, and electronegativity.
What happens to the density of a gas sample collected in a balloon as the sample is heated?
The air becomes less dense as it expands making the balloon appear to self inflate.
Why is agricultural density important in geography?
Agricultural Density is important in geography mainly for economic reasons. A higher agricultural density suggests that the available agricultural land (ie. farms) is being used by more and may reach its output limit sooner than a nation that has a lower agricultural density. In contrast, an area with a low agricultural density actually has a higher potential for agricultural production. Economically, a low agricultural density would be favorable for future growth.
What is the correct sequence of events that follows a threshold potential?
§Labor and management§Productivity§Wage levels§Training needs§Local infrastructureMeasuring site potential in step 3 involves determining whether a site can supply adequate resources needed to carry out the proposed business activity. Key issues include:•For many companies the most important resources will be labor and management.•The productivity and wage levels of local labor and managers.•The cost of training local managers, which can mean substantial investments of time and money.•And the efficiency of local infrastructures, including roads, bridges, airports, seaports, and telecommunications systems.
Is the oxygen level lower in the winter?
Air density is greater in colder weather therefore oxygen has the potential to be greater concentration. I would think anyway.
How do you prove the Potential density equation?
(rho/potential_density) = (p/reference pressure)^(1/gamma) where gamma is the ratio of specific heats Cp/Cv = 1.40.
What is the function of the axon hillock?
An axon hillock is part of a neuron that acts as a bridge between the cell body and the axon. Electrical impulses from the dendrites and cell body are summed at this point, which is then sent down the axon.
What is meant by silt density index?
Silt Density Index (SDI) is an empirical test developed for measuring the rate of fouling of nano filtration (NF) or RO membranes. It represents the potential for fouling of the membranes by finely suspended particles present in feed water to the membranes.
