262 GLOSSARY. 



of the human body of recognizing the presence of foreign objects 

 that come in contact with them. 



SE'RUM (L.). The watery constituent of the blood, which separates 

 from the clot during the process of coagulation. 



SKEL'E-TON (Gr.). The bony framework of an animal, the different 

 parts of which are maintained in their proper relative positions. 



SPEC'TRO-SCOPE (from spec'trum and tino-neco, scopeo, to examine the 

 spectrum). An instrument employed in the examination of the 

 spectrum of the sun or any other luminous body. 



SPHYG'MO-GRAPH (Gr. GcpvynoS, sphugmos, the pulse, and ypaqxa, 

 grapl*), to write). An ingenious instrument by means of which 

 the pulse is delineated upon paper. 



STA'PES (L.). Literally, a stirrup ; one of the small bones of the tym- 

 panum, or middle ear, resembling somewhat a stirrup hi shape. 



SYM-PA-THET'IC SYSTEM OF NERVES. A double chain of nervous 

 ganglia, connected together by numerous small nerves, situated 

 chiefly in front of and on each side of the spinal column. 



SYN-O'VI-A (Gr. dvv, sun, and coov, oon, resembling an egg). The 

 lubricating fluid of joints, so called because it resembles the white 

 of egg. 



SYS'TO-LE (Gr. 6v tfrs'AAo?, sustello, to contract). The contraction of 

 the heart, by which the blood is expelled from that organ. 



TAC'TILE (L. tac'tus, touch). Relating to the sense of touch. 



TEM'PO-RAL (L. tem'pus t time, and tem'pora, the temples). Pertain- 

 ing to the temples ; the name of an artery : so called, because the 

 hail begins to turn white with age in that portion of the scalp. 



TEN'DON (L. ten'do, to stretch). The white, fibrous cord or band by 

 which a muscle is attached to a bone ; a sinew. 



TET'A-NUS (Gr. retroo, teino, to stretch). A disease marked by per- 

 sistent contractions of all or some of the voluntary muscles ; 

 those of the jaw are sometimes solely affecte^ the disorder is then 

 termed locked-jaw. 



THO'RAX (Gr. Scopac, thorax, a breastplate). The upper cavity of 

 the trunk of the body, containing the lungs, heart, etc. ; the 

 chest. 



THY'ROID (Gr. 3vpo'S, thureos, a shield). The largest of the carti- 

 lages of the larynx ; its angular projection in the front of the neck 

 is called " Adam's apple." 



TRA'CIIE-A (Gr. rpaxvS, trachus, rough). The windpipe, or the 

 largest of the air-passages ; composed in part of cartilaginous 

 rings, which render its surface rough and uneven. 



TKANS-FU'SION (L. tramfun'do. to pour from one vessel to another). 



