■ The brain of an adult human weights around  3 pounds. (1.36 kg )

■ If all the blood vessels in the human body were laid end to end , they would encircle the Earth more than two times .


■ Your sense of smell is around 10,000 times more sensitive than your sense of taste. Around 80% of what we think is taste is actually smell. Flavour, is a combination of taste and smell perception.


■ The smallest bone found in the human body is located in the middle ear. It is called stapes bone. It is about 2.6-3.4 mm long . 


■ The longest  bone found  in the human body is located in the thigh. It is called femur . 


■ The cornea is the only part of the body with no blood supply - it gets its oxygen directly from the air. 


■ Between birth and death , the human body goes from having 300 bones , to just 206 .


■ You can't breathe and swallow at the same time . it is because of the palate , which separates the nasal cavity from the inside of the mouth. 


■ The left side of your brain controls the right side of your body  and the right side of your brain controls the left side of your body .


■ Human have the same number of bones in their neck as giraffe . Like giraffes , humans have 7 cervical (neck)  vertebrae.