|
|
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.
A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
There are 60,000 miles of blood vessels in every adult human.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.