Amazing Medical Facts of the Body
part-13
| 241. |  One in
every 2000 babies is born with a tooth. |
| 242. | 
Pregnancy in women lasts on average of about 270 days from the time of
conception till birth. |
| 243. |  Sneezing
too hard can cause rib fracture and suppressing the sneeze can cause damage to
the blood vessels of head or neck. |
| 244. |  On
freeze drying, 10 % of body weight is contributed by the micro organisms of our
body. |
| 245. |  About 80
% of ultra- violet rays from the sun can get through the cloud and can cause
sunburn or tan even on a cloudy day. |
| 246. |  The
human stomach contains about 35 million small digestive glands. |
| 247. |  The
ovaries of a female contain about 600,000 immature eggs at birth. |
| 248. |  The
human body has 4 million pain sensitive structures. |
| 249. |  Each
lung contains 300-350 million respiratory units called alveoli. |
| 250. |  Human
blood contains 22,000 million cells. |
| 251. |  Human
skin is re-newed itself every 5 weeks. |
| 252. |  A New
stomach lining is formed every five days. |
| 253. |  A human
ear contains about 24,000 fibers in it. |
| 254. |  The
largest cell in the woman is the egg or ovum present that is released from the
ovaries. |
| 255. |  Women
burn fat more slowly than men. |
| 256. |  The leg
bone is the fastest growing bone in the human body. |
| 257. |  There
are 22 bones in the human skull. |
| 258. |  A muscle called the
diaphragm controls the human breathing process. |
| 259. |  The
human brain is made up of more than 10 billion nerve cells and over 50 billion
other cells and weighs about less than three pounds. |
| 260. |  2/3 of
the human body is made up of water. |
source:medindia.net
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