Our kidney filters nearly 200 litres of blood daily. One fourth of all blood in human body are filtered by the kidneys every minute.
Finger nails grow nearly four times faster than toe nails.
Vitamins A, D, E and K are fat soluble vitamins, and are stored by the body mainly in the liver. Vitamins B and C are water- soluble, absorbed quickly, but only excess is excreted in the urine.
80% of the body heat is vented through the head.
Stuttering is four to six times more common in boys than in girls. Girls tend to sleep more soundly than boys.
The largest bone is the femur or thigh-bone and the longest muscle is the sartorius on the inside of the thigh.
Ligaments, the connective tissues made up of mainly a tough protein collagen, which can stretch very slightly, join the two bones at the joints such as knees, hips, elbows and spinal joints to restrict the amount of movement they can make. Most of the sport injuries are caused by the 'tear off’ of these ligaments.
The nasal bones are specially structured that the air inhaled can go to the lungs only after circulating several times in the nose and then warming up.
Cigarette smoking causes almost 90 percent of lung cancers and it contains 43 known carcinogens (cancer causing agent).
Dr. Murugappa Chenna Veerappa Modi, (India) a pioneer in mass eye surgery, performed a total of 6, 10, 654 cataract, squint correction and cornea transplant operations, between 1943 and 1993 on an average of 12,211 a year.