Plexus
1. In medicine, a network or tangle of lymphatic vessels, nerves, or veins. For example, the brachial plexus is a network of nerves leading to the arm. In general, any interwoven entity made up of elements in a structure or system.
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The gene encoding proteolipid protein, or lipophilin, the primary constituent of myelin. The PLP1 gene is on the X chromosome in band Xq22. Mutations in PLP1 cause Pelizaeus-Merzbacher disease (PMD) and X-linked spastic paraplegia 2 (SPG2).
- Plumbism
Another name for lead poisoning.
- Plummer's disease
Toxic multinodular goiter. Also called Parry’s disease.
- Plummer-Vinson syndrome
Iron deficiency anemia, esophageal webs, and dysphagia (difficulty swallowing). The iron deficiency is typically chronic and severe. It triggers the growth of web-like membranes in the throat which cause dysphagia. The syndrome is more common in women. Treatment is iron supplementation and, if need be, dilation of the web to permit normal swallowing and the […]
- Plyometrics
Any exercise in which muscles are repeatedly and rapidly stretched (“loaded”) and then contracted (as in jumping high off the ground or in push-ups with a clap between them). The aim of plyometrics is to improve muscle power.