| perineal artery | <anatomy, artery> Origin, internal pudendal; distribution, superficial structures of the perineum; anastomoses, external pudendal arteries. Synonym: arteria perinealis. (05 Mar 2000) |
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| perineal body | central tendon of perineum |
| perineal branches of posterior femoral cutaneous nerve | <anatomy, nerve> Branches of posterior femoral cutaneous nerve which convey sensory fibres to the skin of the lateral-most perineum and adjacent portions of the upper medial thigh. Synonym: rami perineales nervi cutanei femoris posterioris. (05 Mar 2000) |
| perineal flexure of rectum | The anteroposterior curve with convexity anteriorward of the last portion of the rectum. Synonym: flexura perinealis recti, anorectal angle, anorectal flexure. (05 Mar 2000) |
| perineal hernia | A hernia protruding through the pelvic diaphragm. Synonym: levator hernia, pudendal hernia. (05 Mar 2000) |
| perineal hypospadias | Hypospadias in which the urethral defect continues along the perineum to near the anus; the scrotum is usually cleft, the testes undescended, and the penis rudimentary. (05 Mar 2000) |
| perineal lithotomy | Lithotomy in which the bladder is approached by an incision in the perineum. (05 Mar 2000) |
| perineal membrane | The layer of fascia extending between the ischiopubic rami inferior to the sphincter urethrae and the deep transverse perineal muscles. Synonym: membrana perinei, fascia diaphragmatis urogenitalis inferior, Camper's ligament, ligamentum triangulare, perineal membrane, triangular ligament. (05 Mar 2000) |
| perineal muscles | The muscles located in the perineal region; these are the external anal sphincter, the superficial transverse perineal muscle, ischiocavernosus muscle, bulbospongiosus muscle, deep transverse perineal muscle, and sphincter urethrae muscle. Synonym: musculi perinei. (05 Mar 2000) |
| perineal nerves | The superficial terminal branches of the pudendal nerve, supplying most of the muscles of the perineum (deep branch) as well as the skin of that region (superficial branch). Synonym: nervi perineales. (05 Mar 2000) |
| perineal raphe | The central anteroposterior line of the perineum, most marked in the male, being continuous with the raphe of the scrotum. Synonym: raphe perinei. (05 Mar 2000) |
| perineal region | The regio at the lower end of the trunk, anterior to the sacral region and posterior to the pubic region between the thighs; it is divided into the anal triangle posteriorly and the urogenital triangle anteriorly. Synonym: regio perinealis. (05 Mar 2000) |
| perineal section | Any section through the perineum, either lateral or median lithotomy or external urethrotomy. (05 Mar 2000) |
| perineal spaces | See: deep perineal space, superficial perineal space. (05 Mar 2000) |
| perineal surgery | An operation to remove the prostate gland through an incision made between the scrotum and the anus. (12 Dec 1998) |
| peristaltic pump |
A peristaltic pump is a type of positive displacement pump used for pumping a variety of fluids. The fluid is contained within a flexible tube fitted inside a circular pump casing (though linear peristaltic pumps have been made). A rotor with a number of cams ('rollers', 'shoes' or 'wipers') attached to the external circumference compresses the flexible tube. ...
Ãâó: en.wikipedia.org/wiki/Peristaltic_pump
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| period |
In rhetoric, a period is an unusually impressive, well-balanced, and stately sentence. Strictly speaking, a periodic sentence is a sentence whose opening clauses do not express a complete thought until the main clause, which typically comes at the end. The preceding clauses are often many, and exhibit parallel constructions and other rhetorical balancing devices. The overall effect should be of a slow sentence building to a climax. ...
Ãâó: en.wikipedia.org/wiki/Period_(rhetoric)
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| peritrich |
The peritrichs are a large and distinctive group of ciliate protozoa. They are usually bell or disc shaped, with a prominent paroral membrane arising from the oral cavity and circling counter-clockwise around the anterior of the cell, accompanied by a smaller series of membranelles. The oral cavity is apical and funnel shaped, with a contractile vacuole discharging directly into it. When disturbed, the anterior of the cell can contract. ...
Ãâó: en.wikipedia.org/wiki/Peritrich
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| Peritrichia |
The peritrichs are a large and distinctive group of ciliate protozoa. They are usually bell or disc shaped, with a prominent paroral membrane arising from the oral cavity and circling counter-clockwise around the anterior of the cell, accompanied by a smaller series of membranelles. The oral cavity is apical and funnel shaped, with a contractile vacuole discharging directly into it. When disturbed, the anterior of the cell can contract. ...
Ãâó: en.wikipedia.org/wiki/Peritrichia
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| periodic table |
{| border="0" cellpadding="0" cellspacing="1" bordercolor="#ffffff" style="width: 100%;" align="center"! Group! 1! 2! 3! 4! 5! 6! 7! 8! 9! 10! 11! 12! 13! 14! 15! 16! 17! 18|- align="center"| ! I! II| colspan="10" | ! III! IV! V! VI! VII! VIII|- align="center"! Period| colspan="19" | |- align="center"! 1| style="background: rgb(160, 255, 160);" | hydrogen1H| colspan="16" | | style="background: rgb(192, 255, 255);" | helium2He|- align="center"! ...
Ãâó: en.wikipedia.org/wiki/Periodic_table_(big)
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