Amazing Medical Facts of the Body part-13

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