|
|
A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.
![One danger of a wire fence is that, as shown in this photo, it is practically invisible; a running a](https://biology-forums.com/gallery/47/medium_27605_22_04_12_8_05_05.jpeg)
![The frontal lobe (green) bounded by the Sylvian fissure (yellow line) and central sulcus (red line),](https://biology-forums.com/gallery/47/medium_273688_23_02_15_7_07_17_208391007.jpeg)