|
|
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.
Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).
Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.
In 1864, the first barbiturate (barbituric acid) was synthesized.
![Normal development of posture and spinal curves. (A) Toddler: Protruding abdomen; lumbar lordosis. (](https://biology-forums.com/gallery/47/medium_14755_24_09_12_7_41_29_8960395.jpeg)
![Does this child have legs of different lengths or scoliosis? Look at the level of the iliac crests a](https://biology-forums.com/gallery/47/medium_14755_24_09_12_7_49_31_8985943.jpeg)