| recessus pharyngeus | A slitlike depression in the membranous (non-muscular) pharyngeal wall extending posterior to the opening of the auditory (eustachian) tube. Synonym: recessus pharyngeus, recessus infundibuliformis, Rosenmuller's fossa, Rosenmuller's recess. (05 Mar 2000) |
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| recessus phrenicomediastinalis | The recess of the pleural cavity between the diaphragm and the mediastinum. Synonym: recessus phrenicomediastinalis. (05 Mar 2000) |
| recessus pinealis | A diverticulum from the posterior part of the third ventricle extending back between the posterior commissure and the habenular commissure. Synonym: recessus pinealis. (05 Mar 2000) |
| recessus piriformis | A recess in the anterolateral wall of the nasopharynx on each side of the vestible of the larynx separated from it by the aryepiglottic folds. Synonym: recessus piriformis, piriform recess, piriform sinus. (05 Mar 2000) |
| recessus pleurales | Three recesses of the pleural cavity, one behind the sternum and costal cartilages (costomediastinal recess), one between the diaphragm and chest wall (costodiaphragmatic recess), and one between the diaphragm and mediastinum (phrenicomediastinal recess). Synonym: recessus pleurales, pleural sinuses. (05 Mar 2000) |
| recessus posterior | A deepening of the interpeduncular fossa toward the pons. Synonym: recessus posterior. (05 Mar 2000) |
| recessus retrocaecalis | One of several small pockets sometimes found extending alongside the right margin of the ascending colon near the caecum. Synonym: recessus retrocaecalis, caecal recess. (05 Mar 2000) |
| recessus retroduodenalis | A peritoneal recess occasionally found behind the third part of the duodenum, between it and the aorta. Synonym: recessus retroduodenalis, infraduodenal fossa, retroduodenal fossa. (05 Mar 2000) |
| recessus sacciformis | An extension of the cavity of the distal radioulnar articulation proximad between the two bones, an extension of the capsule of the elbow joint at the neck of the radius. Synonym: recessus sacciformis. (05 Mar 2000) |
| recessus sphenoethmoidalis | A small cleftlike pocket of the nasal cavity above the superior concha into which the sphenoid sinuses drain. Synonym: recessus sphenoethmoidalis. (05 Mar 2000) |
| recessus sphericus | A rounded depression on the inner wall of the vestibule of the labyrinth, lodging the sacculus. Synonym: recessus sphericus, fovea hemispherica, fovea spherica. (05 Mar 2000) |
| recessus splenicus | The extension of the omental bursa toward the hilum of the spleen. Synonym: recessus splenicus, recessus lienalis. (05 Mar 2000) |
| recessus subhepaticus | The part of the peritoneal cavity between the visceral surface of the liver and the transverse colon. Synonym: recessus subhepaticus. (05 Mar 2000) |
| recessus subphrenici | The recesses in the peritoneal cavity between the anterior part of the liver and the diaphragm, separated into right and left by the falciform ligament. Synonym: recessus subphrenici, suprahepatic spaces. (05 Mar 2000) |
| recessus subpopliteus | The extension of the cavity of the knee joint between the tendon of the popliteus and lateral condyle of the femur. Synonym: recessus subpopliteus, bursa of popliteus. (05 Mar 2000) |