GLOSSARY. 261 



Sarcolem'ma. [From the Gr. sarx, sarkos, "flesh," and lemma, a "cover- 

 ing."] The covering of the individual muscle fibrils. 



Sar'cous. [From the Gr. sarx, sarkos, " flesh."] Fleshy, belonging to flesh. 



Sarto'rius. [From the Lat. sartor, a "tailor."] The name of the muscle 

 used in crossing the legs, as a tailor does when he sits and sews. 



Scap'ula. [Lat] The shoulder-blade. 



Sclerot'ic. [Lat. scleroticus, from Gr. skleroo, to " harden."] Hard, tough. 



Seba'ceous. A term applied to glands secreting sebum. 



Se'bum or Se'vum. [Lat. sevum, "suet."] A fatty secretion resembling 

 suet, which lubricates the surface of the skin. 



Semilu'nar. [From the Lat. semis, "half," and luna, the "moon."] Having 

 the shape of a half-moon. 



Se'rous. Having the nature of serum. 



Se'rum. [Lat.] The watery fluid separated from the blood after coagula- 

 tion. 



Ses'amoid. [From the Gr. sesamon, a "seed of the sesamum," and eidos, 

 "form," "resemblance."] Resembling a grain of sesamum. A term 

 applied to the small bones situate in the substance of tendons, near 

 certain joints. 



Sig'moid. [From the Gr. letter 5, sigma, and eidos, "form," "resemblance."] 

 Curved like the letter S. 



Sole'us. [From the Lat. solea, a "sandal."] A name given to a muscle 

 shaped like the sole of a shoe. 



Specific Grav'ity. The comparative density or gravity of one body con- 

 sidered in relation to another assumed as the standard. In measuring 

 the specific gravity of liquids or solids, water is usually taken as the 

 standard of comparison, being reckoned as a unit. 



Sphe'noid. [From the Gr. sphen, a "wedge," and eidos, "form," "resem- 

 blance."] Like a wedge. 



Sphinc'ter. [From the Gr. sphiggo, to "bind tight," to " close."] A circu- 

 lar muscle which contracts the aperture to which it is attached. 



Squa'mous. [From the Lat. squama, a "scale."] Scale-like. 



Sta'sis. [From the Gr. stad, to " stop."] Stagnation of the blood current. 



Ste'arin. One of the three chief constituents of fat. 



Ster'num. [Lat.] The breast-bone. 



Stim'ulus, pi. Stim'uli. [Lat. a " goad."] Anything that excites to action. 



Sto'ma, pi. Stom'ata. [From the Gr. stoma, stomatos, a "mouth."] A 

 mouth ; a small opening. 



Strat'ified. [From the Lat. stratum, a "layer," and facio, to "make."] 

 Formed or composed of strata or layers. 



Stri'ated. [From the Lat. strio, striatum, to " make furrows."] That which 

 has stria?, furrows or lines. 



Stro'ma. [From the Gr. stroma, a " bed."] The foundation or led tissue of 

 an organ. 



Styloglos'sus. [From the Gr. stylos, a "pillar," and glossa, the tongue."] 

 A muscle connected with a pointed style-like process of the temporal bone 

 and the tongue. 



Subcla'vian. Under the clavicle. 



