Environmental Sciences, asked by gowthamala1234598, 11 months ago

What is the necessity of nails ?

Answers

Answered by An0nym0u5
1
I can't really tell you the physical uses, but they surely are indicative of your general health. I'll throw some light on this, as to its changes means what, from a medical point of view (in humans essentially).

Transverse groove at same level of all nails indicate a systemic disturbance and some chronic previous illness. If there are splinter haemorrhages under the nails, it also indicates that there are haemorrhages under skin and retina also. And if there are multiple ones, it may suggest infective endocarditis.

Sometimes, your nails may become brittle, flat or even curved like a spoon. It is seen in advanced cases of anaemia or Plummer Vinson syndrome.

Discoloration and deformation of nails can be due to fungal infection but if there is pitting as well, it's psoriasis. If your nail bed is whitened, it's hypoalbuminaemia. However, small isolated white patches may be seen in normal persons too.

Another important sign we look for is clubbing. Nails turn too convexfrom side to side and above downwards, losing their longitudinal ridges. Gross degree of clubbing can be seen in congenital heart diseases, thereby chronic cyanosis too, and empyema also. Lesser degree of clubbing may be seen in lung ca, pulmonary tuberculosis, in some chronic abdomonal conditions too.

If there are nail bed infarcts, we may usually think of vasculitis especially in systemic lupus erythematosis and in polyarteritis.


gowthamala1234598: Thanks boss
Answered by devanshd0007
3

Answer:

The short answer is we have evolved to have nails because they help us pick things up (like food), pick things off (like bugs), and hold tightly onto things. Early humans who had these type of nails (instead of claws) tended to live long enough to have babies and pass on the fingernails gene to their kids.

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