| spherophakia | A congenital bilateral aberration in which the lenses are small, spherical, and subject to subluxation; may occur as an independent anomaly or may be associated with the Weill-Marchesani syndrome. Origin: sphero-+ G. Phakos, lens (05 Mar 2000) |
|---|---|
| spheroplast | Bacterium from which the cell wall has been removed but that has not lysed. (18 Nov 1997) |
| spheroplasts | Bacterial, yeast, or fungal cells that result after partial removal of the rigid cell wall, which forms a membrane-bound cell with a spherical shape that is dependent for its integrity on an isotonic or hypertonic medium. (12 Dec 1998) |
| spheroprism | A spherical lens decentered to produce a prismatic effect, or a combined spherical lens and prism. (05 Mar 2000) |
| spherosiderite | <chemical> Siderite occuring in spheroidal masses. Origin: Sphere + siderite. Source: Websters Dictionary (01 Mar 1998) |
| spherosome | <plant biology> Lysosome like compartment in plants that derives from the endoplasmic reticulum and is a site for lipid storage. Origin: Gr. Soma = body (18 Nov 1997) |
| spherospermia | Spheroid spermatozoa lacking an elongated tail, in contrast to the threadlike, tailed sperm of humans and other mammals (nematospermia). Origin: sphero-+ G. Sperma, seed (05 Mar 2000) |
| spherule | 1. A small spherical structure. 2. A sporangial-like structure filled with endospores at maturity, produced within tissue and in vitro by Coccidioides immitis. Origin: LL. Sphaerula, dim. Of L. Sphaera, sphere, ball (05 Mar 2000) |
| spherulite | <chemical> A minute spherical crystalline body having a radiated structure, observed in some vitreous volcanic rocks, as obsidian and pearlstone. Origin: Cf. F. Spherulite. Source: Websters Dictionary (01 Mar 1998) |
| sphex | <zoology> Any one of numerous species of sand wasps of the genus Sphex and allied genera. These wasps have the abdomen attached to the thorax by a slender pedicel. <zoology> Sphex fly, any one of numerous species of small dipterous flies of the genus Conops and allied genera. The form of the body is similar to that of a sphex. Origin: NL, fr. Gr, a wasp. Source: Websters Dictionary (01 Mar 1998) |
| sphincter | <anatomy> A ringlike band of muscle fibres that constricts a passage or closes a natural orifice, also called musculus sphincter. Origin: L., Gr. Sphinkter = that which binds tight (18 Nov 1997) |
| sphincter angularis | Angular sphincter, thickening of the circular muscular layer forming a proposed intermediate sphincter at the level of the angular notch of the stomach. While the thickening of the circular muscle may indicate the commencement of the pyloric antrum, true functional sphincteric activity distinct from the other peristaltic contractions of the stomach is not observed although some of these may in fact temporarily close off the antrum from the remainder of the stomach lumen. Synonym: antral sphincter, midgastric transverse sphincter, sphincter antri, sphincter intermedius, sphincter of antrum, sphincter of gastric antrum. (05 Mar 2000) |
| sphincter ani tertius | The third sphincter of the anorectum, a physiological sphincter at the sigmoidorectal junction. (05 Mar 2000) |
| sphincter antri | Angular sphincter, thickening of the circular muscular layer forming a proposed intermediate sphincter at the level of the angular notch of the stomach. While the thickening of the circular muscle may indicate the commencement of the pyloric antrum, true functional sphincteric activity distinct from the other peristaltic contractions of the stomach is not observed although some of these may in fact temporarily close off the antrum from the remainder of the stomach lumen. Synonym: antral sphincter, midgastric transverse sphincter, sphincter antri, sphincter intermedius, sphincter of antrum, sphincter of gastric antrum. (05 Mar 2000) |
| sphincter constrictor cardiae | A sphincter supposedly present at the oesophagogastric junction; this is in fact an extrinsic sphincter formed by the surrounding musculature of the oesophageal hiagus of the right crus of the diaphragm; causes a normally-occuring constriction at the oesophagogastric junction observable with a barium swallow. Synonym: sphincter constrictor cardiae. (05 Mar 2000) |
| spherical |
A contact lens design that is like a sphere and is fairly common; in contrast, toric lenses for astigmatism are football-shaped and are less common.
출처: www.allaboutvision.com/resources/glossary-3.htm
|
|---|---|
| spherule |
A sporangium like structure containing endospores that is produced by Coccidioides immitis or Rhinosporidium seeberi.
출처: www.ec.upstate.edu/medtech/microb/glossary.htm
|
| sphincter |
Muscular structure that surrounds the urethra and allows the bladder to store or empty urine. This muscle is circular and acts like a valve, can relax or tighten to open or close the outlet of the bladder. The urethra has an internal and external sphincter. Internal sphincter is the portion of the urethra found at the bladder neck that keeps the urethra closed when a person is at rest. External sphincter is the portion of the urethra that is under a person's own control (voluntary control). ...
출처: www.seekwellness.com/incontinence/glossary_of_inco...
|
| sphygmomanometer |
the instrument used to measure blood pressure.
출처: www.health.uab.edu/show.asp
|
| spherical lens |
Segment of a sphere, refracting rays of light equally in all meridians.
출처: www12.mawebcenters.com/coltslaboratories/gloss.ivn...
|