Hyaluronic acid
A viscous slippery substance that lubricates the joints, maintains the shape of the eyeballs, and is a key component of connective tissue. On a more technical level, hyaluric acid is an glycosaminoglycan (formerly called a mucopolysaccharide), a long unbranched polysaccharide (complex sugar), composed of repeating dimeric units of glucuronic acid and N acetyl glucosamine.
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A respiratory disease of the newborn, especially the premature infant, in which a membrane composed of proteins and dead cells lines the alveoli (the tiny air sacs in the lung), making gas exchange difficult or impossible. The word “hyaline” comes from the Greek word “hyalos” meaning “glass or transparent stone such as crystal.” The membrane […]
- Hypomagnesemia
Low magnesium in the blood, which can occur due to inadequate intake or impaired intestinal absorption of magnesium. Hypomagnesemia is often associated with low calcium (hypocalcemia) and low potassium (hypokalemia). It causes increased irritability of the nervous system with tetany (spasms of the hands and feet, muscular twitching and cramps, spasm of the larynx, and […]
- Hypomania
A condition similar to mania but less severe. The symptoms are similar with elevated mood, increased activity, decreased need for sleep, grandiosity, racing thoughts, and the like. However, hypomanic episodes differ in that they do not cause significant distress or impair one’s work, family, or social life in an obvious way while manic episodes do. […]
- Hypomanic
Affected by hypomania, a condition similar to mania but less severe. Hypomanic episodes may resemble manic episodes in symptoms. But hypomanic episodes do not cause significant distress or greatly impair one’s work, family, or social life while manic episodes do.
- Hypomnesia
Abnormally poor memory of the past. As compared to hypermnesia and amnesia. From hypo- + the Greek mneme, memory.