People who opt for a simple and healthy lifestyle are often
the ones who tend to live longer and are not hampered by stress. By choosing a diet where they eat foods that
are rich in vitamins and minerals and cutting back on fast food or processed
dishes, their life expectancy has great chance of increasing. Together with a healthy attitude, people who
make this choice tend to live longer.
Answer:
An <u>Action Potential</u> is an <u><em>"All or Nothing"</em></u> phenomenon. It was first described in 1871 by a Physiologist Henry Pickering Bowditch.
Explanation:
The action potential is always a full response, there is no such thing as a strong or weak potential. This means that when<u> a stimulus is given, a neuron either does not reach the threshold or a full action potential is fired</u>.
<u><em>STATEMENT OF LAW:</em></u>
The all or none law states that , <u>the strength of a response of a nerve cell or a muscle fiber do not depends upon the strength of a stimulus. If a stimulus is above a certain threshold, the nerve cell will send the information down the axon towards the synapse and the signal is being propagated.</u>
<u><em>SIGNIFICANCE:</em></u>
The significance of this law is that<u> it minimizes the possibility of information to be lost along the way.</u>
This law was initially applied to the muscles of heart but later it was found to be true for neuronal cells and other muscle fibers too.
Thus an action potential is all or nothing event.
In "Sonnet 30", by Edmund Spenser, the poet uses a metaphor to explain his situation: he compares the unloving heart of Elizabeth with <em>ice</em>, and his own loving heart with <em>fire</em>. He then wonders why, if her heart is ice and his fire, he cannot melt it and make her love him. Instead, he appears to push her away even harder with his love, <em>fortifying </em>the ice instead of <em>melting </em>it, but that makes him love her even more. Therefore, he wonders "What more miraculous thing may be told that fire, which all things melts, should harden ice: and ice, which is congealed with senseless cold, should kindle fire by wonderful device?"
The poet's message is that, even when you have everything to offer, sometimes love is unattainable.