|
|
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.
In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.
For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.
Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
![Play provides these preschoolers with the ability to interact with one another, and develop their ph](https://biology-forums.com/gallery/47/medium_2137_17_05_12_2_25_54.jpeg)
![Acute exacerbations of asthma can require management in the emergency department. The child is place](https://biology-forums.com/gallery/47/medium_14755_05_10_12_4_09_38_92591688.jpeg)