Nuchal
Referring to the back of the neck (nape). For example, nuchal rigidity is a stiff neck, sometimes a symptom of meningitis.
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- Nuchal translucency test
A measurement of the size of the translucent space behind the neck of the fetus using ultrasound at between 10 and 14 weeks of pregnancy, reflecting the amount of fluid that has accumulated under the skin of the fetus. Nuchal translucency tends to be increased in chromosome disorders such as Turner syndrome and Down syndrome. […]
- Nuclear family
The family group consisting of the father, mother, and their children, as distinct from the extended family.
- Nuclear medicine
The branch of medicine concerned with the use of radioisotopes in the diagnosis, management, and treatment of disease.
- Nuclei, basal
A region located at the base of the brain composed of 4 clusters of neurons, or nerve cells. This area of the brain is responsible for body movement and coordination. The groups of neurons most prominently and consistently affected in Huntington disease — the pallidum and striatum — are located in the basal nuclei. (The […]
- Pallidum
Part of what are called the basal ganglia of the brain which consist of the globus pallidus and the ventral pallidum. The globus pallidus itself is a pale-appearing spherical area in the brain. (Globus is a Latin word meaning a globe or sphere. Pallidus refers to its pallor relative to the surrounding brain substance.) The […]