Category: P
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Pyramidalis
The muscle that arises from the crest of the pubis and is inserted into the linea alba upward about halfway to the navel.
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Pyramid of the thyroid
A conical process sometimes present, extending cephalad from the isthmus of the thyroid gland.
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Pyramid of the medulla
One of a pair of elongated tapering prominences on the anterior (i.e., ventral) surface of the medulla oblongata, composed of descending corticospinal fibers.
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Pyramid of light
The triangular light reflex from the typanic membrane of the ear.
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Pyoxanthine
A yellow pigment resulting from oxidation of pyocyanin, sometimes present in pus.
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Pyovesiculosis
Pus collection in the seminal vesicles.
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Pyoverdin
An iron-binding molecule, produced by Pseudomonas species, that competes with transferrin for host iron. It contributes to the virulence of Pseudomonas infections.
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Pyopneumoperitonitis
Pus and air in the peritoneal cavity complicating peritonitis. Peritonitis with the presence of pus and air in the abdominal peritoneal cavity.
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Pyopneumoperitoneum
Peritonitis with gas and pus in the peritoneal cavity, A buildup of pus and air in the abdominal peritoneal cavity.
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Pyopneumopericardium
Pus and air or gas in the pericardium.