|
|
Cyanide works by making the human body unable to use oxygen.
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.
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
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.
Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
![Pulse oximetry with the sensor probe applied securely, flush with skin, making sure that both sensor](https://biology-forums.com/gallery/47/medium_14755_01_10_12_7_52_54_91982233.jpeg)
![There is no such thing as the African American family, any more than there is the Native American, ...](https://biology-forums.com/gallery/27/medium_482573_20_04_17_12_17_31_27923706.png)
![Rolling on the arm. Hands on opposite sides of the arm compress and roll the soft tissues and create ...](https://biology-forums.com/gallery/32/medium_380798_23_08_17_12_08_28_32992869.jpeg)