If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
The male fetus is capable of attaining an erection during the last trimester.
75
You see your nose at all times, your brain just chooses to ignore it.
30
Redheads require more anesthesia to 'go under' than other hair colors do.
51
The right lung takes in more air than the left.
30
There are about 1,400 different species of bacteria in your belly button.
10
