Hemorrhoids affect over 1 million people in the Western world each year. They are much less common in underdeveloped countries, which is likely due to the high-fat, low-fiber diet that is more popular in Westernized countries.
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Many vitamins are important for healthy skin. As skin rashes and changes are easy to see, sometimes they are the first sign of a vitamin deficiency.
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The soft, thin hair that is sometimes found on the face, shoulders and back of newborns is called lanugo. All fetuses grow lanugo hair in utero. The hair generally vanishes between 36 and 40 weeks gestation. Thus, premature infants are more likely to have lanugo hair.
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Heart rate reserve is a term used to describe the difference between your maximal heart rate and your resting heart rate. It can then be used to estimate your aerobic exercise training zone.
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Your breathing rate is primarily regulated by neural and chemical mechanisms. Respiration is controlled by spontaneous neural discharge from the brain to nerves that innervate respiratory muscles. The primary respiratory muscle is the diaphragm, which is innervated by the phrenic nerve.
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Cooper's ligaments are thin collections of connective tissue in the breasts that help support the bulk of the breast tissue.
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