Category: N

A gaseous compound of smoke that may be a cause of emphysema.  

A drugged condition that can be created in a person when the nitrogen in the body is exposed to great pressure as in a deep dive. Loss of consciousness due to the formation of nitrogen in the tissues, caused by pressure change. A condition of euphoria, impaired judgment, and decreased coordination and motor ability seen…

Bacteria, living in the soil or in the root systems of legumes, that convert atmospheric nitrogen into nitrogen compounds in their own bodies.  

Microorganisms that convert nitrites into nitrates in the nitrogen cycle.  

The bacteria that carry on nitrification. Bacteria that induce nitrification, including the nitrite bacteria of the genus Nitrosomonas, which convert ammonia to nitrites, and nitrate bacteria of the genus Nitrobacter, which convert nitrites to nitrates.  

Discrete bodies present in the cytoplasm of a nerve cell associated with their activities. One of the coarse granules surrounding the nucleus in the cytoplasm of nerve cells.  

A surgical method by which a nipple is grafted to another part of the body until the breast is reconstructed and then replaced onto the reconstructed breast.  

A group of dopamine-containing neurons that have their cell bodies in the midbrain and their terminals in the basal ganglia, which is part of the extrapyramidal motor system. This pathway deteriorates in Parkinson’s disease and on which antipsychotic drugs act to produce side effects resembling Parkinson’s disease.  

A pledge often recited at graduation ceremonies for nurses. An oath sometimes used by nurses on graduation from professional school. The pledge was formulated by a committee of the Farrand School of Nursing, Harper Hospital, Detroit, Michigan, of which Lystra Gretter was the chairperson, and was first administered to the graduating class in 1893.  

A genetic disorder of fat metabolism resulting in mental retardation and brings early death. A rare inherited disease of a group which affect metabolism. Signs in babies include feeding difficulties, a large abdomen within 3 to 6 months, and progressive loss of early motor skills. A genetic disease in which a mutation in the gene…