|
Author Question: Not to ________the point, but please don't drive after dark until you get your eyes checked. ... (Read 27 times) |
Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.
Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.