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Author Question: Liberalism is good at explaining a. realpolitik. b. the competitive self-interest of states. c. ... (Read 20 times) |
There are 20 feet of blood vessels in each square inch of human skin.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.