|
|
The human body produces and destroys 15 million blood cells every second.
Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.
![Stages of endometrial cancer. Stage I: Mutated cells arise from glandular epithelium of the endometr](https://biology-forums.com/gallery/47/medium_14755_16_10_12_12_27_40_94371810.jpeg)
![Effect of pH on drug absorption: (a) a weak acid such as aspirin (ASA) is in a nonionized form in an](https://biology-forums.com/gallery/47/medium_46687_12_12_14_7_07_20_195621630.jpeg)