Category: N
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Necrosed
Referring to dead tissue or bone.
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Necrology
The scientific study of mortality statistics. The study of the phenomena of death, involving determination of the moment of death and the different changes that occur in the tissues of the body after death.
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Necrobiosis
The death of cells surrounded by living tissue. The gradual localised death of a part or tissue. A gradual process by which cells lose their function and die. Necrobiosis lipoidica is patchy degeneration of the skin causing areas of white scarring and thinning. It is most commonly seen in diabetics but is found occasionally in…
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Neck collar
A strong high collar to support the head of a person with neck injuries or a condition such as cervical spondylosis.
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Necatoriasis
Infestation of the small intestine by the parasite Necator. An infestation of the small intestine by the parasitic hookworm Necator americanus.
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Necator
A genus of hookworm which infests the small intestine. A genus of hookworms that live in the small intestine. The human hookworm, N. americanus, occurs in tropical Africa, Central and South America, India, and the Pacific Islands. The worm possesses two pairs of sharp cutting plates inside its mouth cavity, which enable it to feed…
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Nebula
A slightly cloudy spot on the cornea. A spray of medicinal solution, applied to the nose or throat using a nebuliser. A faint opacity or scar on the cornea; it seldom interferes with vision. A faint opacity of the cornea that remains after an ulcer has healed. A subtle, greyish cloudiness on the cornea of…
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Navicular bone
One of the tarsal bones in the foot. A boat-shaped bone of the ankle that articulates with the three cuneiform bones in front and with the talus behind. A bone in the foot that connects with the talus’s head (a bone within the ankle joint) and with three of the tarsal bones (comprising the rear…
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Navel
The scar with a depression in the middle of the abdomen where the umbilical cord was detached after birth. The scar on the abdomen that marks the site where the umbilical cord connecting mother to fetus during pregnancy was attached to the fetus. The medical word for the navel is the umbilicus. The scar on…
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Nauseated
Feeling as if you are about to vomit.