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:
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Explanation:
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Answer:
True
Explanation:
Manchester encoding is a form of digital encoding (or a data modulation technique) in which data bits alternate from high to low or low to high in equal manners. It also allows data senders to easily synchronize with the receiver. Manchester encoding is introduced for security of data and fast transmission.
Explanation:
Life during the 1800s in America was already difficult for many people. Of course, there were rich factory owners in the North and plantation owners in the South, but the average farmer and his family worked extremely hard just to survive. When the Civil War started, living conditions became even more difficult for the average American. Many of the men joined the army or were drafted. The women were left at home to work the farm or to find jobs and support the family on their own. Poor Men Went to War Many poor men thought that fighting in the army was an opportunity for adventure and excitement. This seemed much better than the drudgery of the hard work of everyday life. They soon found out that war was both boring and terrifying. Both sides of the war eventually instituted a draft. This was when men were randomly chosen to enter the army whether they wanted to or not. However, the rich were able to legally avoid the draft. In the North, they could pay a fee of $300 or pay someone else to take their place. In the South, men who owned more than twenty slaves didn't have to fight. Women at Home With so many men gone to war, women had to take up new jobs. They worked the fields on farms and at factories producing goods for the armies. Some women served as nurses in the army, helping wounded soldiers recover. Women had to work very hard to provide for their families. Often not only their husbands were at war, but also their older sons and fathers. War in the South Life in the South during the Civil War was even more difficult than in the North. The Union had blockaded many of the ports of the South, causing shortages of food and other items that people needed. Also, most of the war took place in the South. Families lived in constant fear of getting overrun by an army. When General Sherman took the Union army from Atlanta to Savannah he burned and destroyed much of the land and farms along the way. It was a scary time.
