| RRS | retrorectal space; Richards-Rundle syndrome |
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| RSTS | retropharyngeal soft tissue space |
| SES | Society of Eye Surgeons; socioeconomic status; spatial emotional stimulus; sphenoethmoidal suture; s... |
| SM | Master of Science; sadomasochism; self-monitoring; silicon microphysiometer; simple mastectomy; skim... |
| SOL | solution; space-occupying lesion |
| superficial perineal space | The superficial compartment of the perineum; the space bounded above by the perineal membrane (inferior fascia of the urogenital diaphragm) and below by the superficial perineal (Colles') fascia; it contains the root structure of the penis or clitoris and associated musculature, plus the superficial transverse perineal muscle and, in the female only, the greater vestibular glands. Synonym: spatium perinei superficiale, Colles' space, superficial perineal pouch. (05 Mar 2000) |
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| dead space | A cavity, potential or real, remaining after the closure of a wound which is not obliterated by the operative technique. See: anatomical dead space, physiologic dead space. (05 Mar 2000) |
| deep perineal space | The region between the perineal membrane and the endopelvic fascia of the floor of the pelvis occupied by the membranous part of the urethra, the bulbourethral gland (in the male), the deep transverse perineal and sphincter urethrae muscles, and the dorsal nerve and artery of the penis or clitoris. Synonym: spatium perinei profundum, deep perineal pouch. (05 Mar 2000) |
| suprasternal space | A narrow interval between the deep and superficial layers of the cervical fascia above the manubrium of the sternum through which pass the anterior jugular veins. Synonym: Burns' space. (05 Mar 2000) |
| denture space | That portion of the oral cavity which is, or may be, occupied by maxillary and/or mandibular denture(s), the space between the residual ridges which is available for dentures. See: interarch distance. (05 Mar 2000) |
| disk space | On radiographs of the spine, the radiolucent region between each pair of vertebral bodies. (05 Mar 2000) |
| Disse's space | The potential extravascular space between the liver sinusoids and liver parenchymal cells. Synonym: Disse's space. (05 Mar 2000) |
| image space | <microscopy> The space about an optical system each point of which is conjugate to some point in the object space. (05 Aug 1998) |
| quadrangular space | Musculotendinous formation providing passageway for the axillary nerve, posterior humeral circumflex artery and accompanying veins as they run from the axilla to the superior posterior arm; as the neurovascular structures enter the formation anteriorly, it is bounded superiorly by the shoulder joint, medially by the lateral border of subscapularis, laterally by the surgical neck of the humerus, and inferiorly by the tendon of latissimus dorsi; as the vessels exit the formation posteriorly, it is bounded superiorly by the teres minor, medially by the long head of the triceps, laterally by the lateral head of the triceps and inferiorly by the teres major muscle or tendon; as they emerge, most of the neurovascular structures run on the deep surface of the deltoid muscle, which they supply. Synonym: quadrilateral space. (05 Mar 2000) |
| quadrilateral space | Musculotendinous formation providing passageway for the axillary nerve, posterior humeral circumflex artery and accompanying veins as they run from the axilla to the superior posterior arm; as the neurovascular structures enter the formation anteriorly, it is bounded superiorly by the shoulder joint, medially by the lateral border of subscapularis, laterally by the surgical neck of the humerus, and inferiorly by the tendon of latissimus dorsi; as the vessels exit the formation posteriorly, it is bounded superiorly by the teres minor, medially by the long head of the triceps, laterally by the lateral head of the triceps and inferiorly by the teres major muscle or tendon; as they emerge, most of the neurovascular structures run on the deep surface of the deltoid muscle, which they supply. Synonym: quadrilateral space. (05 Mar 2000) |
| infraglottic space | The part of the cavity of the larynx immediately below the glottis. Synonym: cavitas infraglotticum, aditus glottidis inferior, cavum infraglotticum, inferior laryngeal cavity, infraglottic space. (05 Mar 2000) |
| interalveolar space | The vertical distance between the maxillary and mandibular arches under conditions of vertical dimensions which must be specified, the vertical distance between maxillary and mandibular ridges. Synonym: interalveolar space, interridge distance. (05 Mar 2000) |
| intercostal space | An interval between the ribs, occupied by intercostal muscles, veins, arteries and nerves. Synonym: spatium intercostale. (05 Mar 2000) |
| interfascial space | The space between the fascial sheath of the eyeball and the sclera. Synonym: spatium episclerale, interfascial space, spatium interfasciale, spatium intervaginale bulbi oculi, Tenon's space. (05 Mar 2000) |
| interglobular space | One of a number of irregularly branched spaces near the periphery of the dentin of the crown of a tooth, through which pass the ramifications of the tubules; they are caused by failure of calcification of the dentin. Synonym: spatium interglobulare, interglobular space of Owen. (05 Mar 2000) |