Answer:
Explanation:
Action potential
It is the potential or power or electrical energy required to generate impulses and provides communication between the neurons is called action potential. Normally cell membrane consists of potential is called resting membrane potential() -70mV. The action potential is due to exchange of different ions across the membrane.
Phases of the action potential in a neuron are
i. Depolarization- it is caused by the influx of sodium and calcium ions through the opening of voltage-gated sodium and calcium channels. sodium ion influx is rapid than the calcium ions membrane potential -70mV to +30mV.
ii. Repolarization - It causes the efflux of potassium ions into the cell through the opening of potassium channels. the membrane returning to resting membrane potential.
iii. After- Hyper polarization - in this stage the potassium channels remain open and causes re polarization and comes to normal membrane potential.
The generation of impulses(depolarization) in neuron mainly depends on influx sodium and calcium ions without these ions, no action potential developed and neuron firing does not occur.
If the drugs inhibit these channels, no depolarization, no action potential, no neuronal firing or communication.
The channels involved in an action potential are voltage-gated sodium channels, potassium channels, and calcium channels.
The action potential is required for transmission of information one are to another area in the body.
The responses to different stimuli is due to action potential.
Answer:seed-tree method or seed-tree cutting
Explanation:
The seed tree method is a modified method of clear cutting where trees which are seen to be the best are left behind so that they can regenerate and become parent trees to the new forest.
When everything else is cut off 8 to 10 trees which shows to be perfectly healthy and matured are left behind for regeneration.
These are wind resistant trees with light seeds like maple trees. After the new trees have grown they may be cutt off or be left for the two age stand.
You are right the U.S is in the Northern Hemisphere and the Western Hemisphere.
Answer: B) An open seat where the candidate who spends the most money wins.
Explanation: An open seat where the person who spends the most money wins. Open seat elections are the highest rate of money being tied to election success. Almost always in this scenario the candidate that spends the most money wins.
Answer:
<em>true </em><em>syllogism</em><em> </em><em>does </em><em>have </em><em>three </em><em>prepositions.</em>
<em>I </em><em>hope</em><em> this</em><em> helps</em>
