398 GLOSSARY. 



Sacrum (.sfi'-Arrww). A curved triangular bono, composed of five con- 

 solidated vertebrae, wedged between the two iliac (pelvic) bones, 



and forming the dorsal boundary of the pelvis. 

 Scapula (akap'-u-la). The shoulder-blade. 

 Sciatic (sl-at'-ik}. Pertaining to the ischium; the sciatic nerve, the 



main nerve of the thigh. 

 Sclerotic (skle-rot'-ik). Hard, indurated; pertaining to the outer coat 



of the eye. 

 Semilunar (sem-i-lu'-nar). Resembling a half-moon in shape; semilu- 



nar valves, pocket-like valves at the beginning of the aorta and 



pulmonary artery. 

 Serous (se'-rws). Pertaining to, characterized by, or having the nature 



of, serum. 

 Serum (se'-rwm). The yellowish fluid separating from the blood after 



the coagulation of the fibrin. 



Solar plexus (so'-lar). Solar, with radiations resembling the sun. 

 Sphincter (sfinyk'-ter}. A muscle surrounding and closing an orifice. 

 Splenic (splen'-ik). Pertaining to the spleen. 

 Steapsin (step'-sin}. A diastasic ferment which causes fats to combine 



with an additional molecule of water and then split into glycerine 



and their corresponding acids. 

 Sternum (ster'-num}. The breast-bone. 

 Subclavian (sub-kla'-vi-an}. Situated under the collar-bone ; subcla- 



vian artery and vein. 

 Sublingual (sub-liny '-ywal}. Lying beneath the tongue, as sublingual 



gland. 

 Submaxillary (sub-mak'-si-la-ri}. Lying beneath the lower maxilla, as 



submaxillary salivary gland. 



Supination (su-pi-na'-shun). The turning of the palm upward. 

 Synovia (si-no' -vi-a). The lubricating liquid secreted by the synovial 



membranes in the joints. 



Tarsus (tar'-sus'). The instep, consisting of seven bones. 

 Temporal (tem'-pd-ral). Pertaining to the temples, as temporal artery, 



vein, muscle, etc. 

 Tetanus (tet'-a-nus}. A spasmodic and continuous contraction of the 



muscles, causing rigidity of the parts to which they are attached. 

 Thein (the'-in'). An alkaloid found in tea. 



Theobromin (the-o-bro'-min'). A feeble alkaloid obtained from cacao- 

 butter ; the essential substance found in cocoa and chocolate. 



