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Medical Dictionary Terms Beginning with Z
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Z chromosome
Z chromosome: This is a sex chromosome in certain animals likes chickens, turkeys, and moths. In humans, males are XY and females XX. But in animals with a Z chromosome, males are ZZ and females are WZ.more detail info...
Zinc
Zinc: A mineral essential to the body. Zinc is a constituent of many enzymes that permit chemical reactions to proceed at normal rates. It is involved in the manufacture of protein (protein synthesis) and in cell division. Zinc is also a constituent omore detail info...
Zinc deficiency
Zinc deficiency: According to the National Academy of Sciences, the Recommended Dietary Allowances of zinc are 12 milligrams per day for women and 10 milligrams per day for men. Food sources of zinc include meat including liver, eggs, seafood, nuts anmore detail info...
Zinc deficiency dermatitis and
Zinc deficiency dermatitis and diarrhea: Among the consequences of zinc deficiency, dermatitis (skin inflammation) and diarrhea are particularly prominent features. A genetic disease called acrodermatitis enteropathica in which there is impaired zimore detail info...
Zinc excess
Zinc excess: Too much zinc can cause gastrointestinal irritation (upset stomach), interfere with copper absorption and cause copper deficiency, and (like too little zinc) cause immune deficiency. According to the National Academy of Sciences, the Recomore detail info...
Zinsser disease
Zinsser disease: Also called Brill-Zinsser disease, recrudescence of epidemic typhus years after the initial attack. The agent that causes epidemic typhus (Rickettsia prowazekii) remains viable for many years and then when host defenses are down, imore detail info...
Zygoma
Zygoma: The bone that forms the prominence of the cheek. Known also as the zygomatic bone, the zygomatic arch, malar bone, yoke bone. Zygoma comes from the Greek zygon meaning a yoke (as for oxen).more detail info...
Zygomatic arch
Zygomatic arch: See Zygoma.more detail info...
Zygomatic bone.
Zygomatic bone. See Zygoma.more detail info...
Zygote
Zygote: A zygote is the cell that is formed by the union of a sperm (male sex cell) and an ovum (female sex cell). The zygote develops into the embryo as instructed by the genetic material within the unified cell. The unification of a sperm and an ovumore detail info...
Zygotic lethal gene
Zygotic lethal gene: A gene that is lethal (fatal) for the zygote, the cell formed by the union of a sperm (male sex cell) and an ovum (female sex cell). The zygote would normally develop into an embryo, as instructed by the genetic material within the umore detail info...
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