Interesting Facts about Human Body

1.) Eyes: You Blink about 20000 times a day.

2.) Hair: Hair grows about .5 mm (.02 in) a day.

3.) Mouth: You will produce 37,800 l of saliva in your life.

4.) Cells: There are 50 trillion cells in your body and 3 billion of themdie every minute.

5.) Nerves: Your body has about 13000000000000 nerve calls, transmitting message at speed of 290 km/hr.

6.) Brain power: You lose 100000 brain cells every day! The main thing is that you have 100 billion altogether. If surface area of your brain could be ironed out it wouldmeasure 2090 sq.cm.

7.) Heartbeats: Your heart pumps 13640 L of blood around your body in a day. An average heartbeat rate per minutes of our body is 70 beats and this will adds more than 100000 beats a day.

8.) Urine : You will pass 400 to 2000 ml of urine every day, depending on your age, your size and outside conditions, especially temperature.

9.) Chemicals: There is enough carbon in your body to fill 900 pencils, enough Fat to make 75 candles, enough phosphorous to make 220 match heads and enough iron to make a 7.5 cm nail.

10.) Can you overdose on vitamins? Overdosing on some vitamins can have serious side effects. Vitamin A: Doses of more than 3752 mg can lead to liver damage,hair losses and headaches. Vitamin B6: Doses of more than 400mg can cause numbness in the mouth. Vitamin C: Stomach ache can be caused due to high doses of Vitamin C. Vitamin D: Daily doses of 600 mg can interfere with the functioningof muscles. Niacin: Doses of upto 2000 mg are prescribe to help lower cholesterol but this could cause jaundice and liver damage.

11.) Tea Or Coffee? The two main constituents of tea are“caffeine and tannin”. A tea bag contains about 40 mg of caffeine and brewed tea about 30mg. Tea also contains useful fluorides, volatile oils and Vitamin B. “Caffeine” is the main constituent of coffee. A cup of brewed coffee contains about 80 mg of caffeine and instant coffee about 60 mg. Medical studies show that heavy caffeine use (more than 500 mg/day) may cause harmful physiological effects. A cup of tea or coffee (without sugar and milk)contains about 16KJ of energy.

12.) Fingers: Our fingers are so sensitive that they can detect a vibration with a movement of 0.02 cm. Our “finger nails” grow at the rate of about 0.05 mm in a week and hair about 3 mm in a week.

10 Facts About Brain

What part of you is only 1% to 3% of your body’s mass, yet uses 20% of all the oxygen you breathe? Your brain! Here are ten more brain facts.

– Your brain needs a continuous supply of oxygen. A 10 minute loss of oxygen will usually cause significant neural damage. Cold can lengthen this time, which is why cold-water drowning victims have been revived after as nuch as 40 minutes – without brain damage.

– Your brain uses a fifth of all your blood. It needs it to keep up with the heavy metabolic demands of its neurons. It needs not only the glucose that is delivered, but of course, the oxygen.

– Your brain feels no pain. There are no nerves that register pain within the brain itself. Because of this, neurosurgeons can probe the brain while a patient is conscious (what fun!). By doing this, they can use feedback from the patient to identify important regions, such as those used for speech, or visualization.

– The cerebellum is sometimes called the “little brain,” and weighs about 150 grams (a little over five ounces). Found at the lower back side of your brain, you need your cerebellum to maintain posture, to walk, and to perform any coordinated movements. It may also play a role in your sense of smell.

– The human brain weighs an average of a little over three pounds, or 1.4 kilograms. Albert Einstein’s brain may have been smaller than yours, because he was smaller than average. There is a general correlation between body size and the size of our brains.

– An elephant’s brain is huge – about six times as large as a human brain. However, in relation to body size, humans have the largest brain of all the animals, averaging about 2% of body weight. A cat’s brain? It weighs about one ounce, a little over 1% of body weight.

– There are about 100,000 miles of blood vessels in the brain. If they were stretched out (there’s a nice thought!) they would circle the earth more than four times.

– If you have an average sized brain, you have about 100 billion neurons up there. You’ll be happy about that after reading the next item.

– Approximately 85,000 neocortical neurons are lost each day in your brain. Fortunately, this goes unnoticed due to the built-in redundancies and the fact that even after three years this loss adds up to less than 1% of the total. Oh, and look at the next item.

– Recent research proves that your brain continues to produce new neurons throughout your life. It also proves that it does so in response to stimulation (do those brainpower exercises). Scientists refer to this as brain plasticity or neuro-plasticity. You may find this one the most encouraging of these brain facts.