316 



GLOSSARY. 



venous sinuses in the interior of 

 the cranial cavity are hollows in 

 the dura mater which perform 

 the function of veins. 



Sinus pocularis, cup-like sinus ; 

 a minute hollow in the prostatic 

 portion of the urethra, repre- 

 senting the uterus in the female. 



Smegma, soap ; the white soapy 

 substance frequently adherent 

 to the skins of new-born infants. 



Solar, sol the sun. The solar 

 plexus is the large plexus of 

 sympathetic nerves in the upper 

 part of the abdomen. 



Soleus, solea a sole; the name of 

 a muscle of the calf of the leg, 

 shaped much like a sole. 



Somnambulism, somnus sleep, and 

 amhilo I walk; walking in sleep. 



Spectrum, an appearance ; in 

 physics, the prismatic colours 

 obtained by analysis of the rays 

 of any luminous body ; in phy- 

 siology, the image which con- 

 tinues to be seen after gazing at 

 any bright object. ui 



Spermatozoon, oW/o^rf a seed, and 

 ooV a living thing; the essen- 

 tial male element of reproduc- 

 tion. 



Sphacelus, a-tyaKeXos gangrene. 



Sphenoid, o-cprju a wedge, and 

 6i5o5 form , the name of the 

 central bone in the base of the 

 skull. 



Sphincter, a-<j>tyKvnp a tight band; 

 a circular muscle which keeps 

 an orifice habitually shut. 



Sphygmograph, <7</>uy/xos the 

 pulse, and ypafpio I write ; an 

 instrument with a lever which 

 rises and falls with the pulse, 

 and has a pen attached to it, by 

 means of which it makes a 

 tracing on a card moved by 

 clock-work. 



Spore, o-Tropa a seed; a vegetable 

 germ which develops without 

 impregnation. 



Scruamous, squama a scale ; con- 

 sisting of scales, as ^.qtiamous 

 epithelium; shaped like a scale, 

 as the squamous part of the 

 temporal bone. 



Stapes, a stirrup ;" the name of a 

 stirrup-shaped ossicle in the 

 tympanum of the ear. 



Stercorin, stercus dung; a crys- 

 tcilline substance obtained from 

 foeces. 



Stereoscope, o-repeos solid, and 

 a-KoTreca I behold; an instrument 

 by means of which two views, 

 such as might be presented by 

 one object to the two eyes, being 

 exhibited one to each eye, a 

 single picture is seen with the 

 solidity and perspective of 

 reality. 



Sternum, o-Te'pi/oy the breast ; the 

 breast-bone. 



Stigma, vTiyfjiri a puncture ; an 

 opening leading into a respira- 

 tory trachea in an insect; the 

 part of the pistil of a flower to 

 which the pollen is applied, and 

 which leads into the ovary. 



Stroma, o-Tpw/xa a thing spread 

 out for lying on ; the ground- 

 work of a texture, in which 

 other parts are imbedded; the 

 matrix of a tissue. 



Styloid, O-TU\OS a pointed instru- 

 ment for writing, and el8o<s 

 form ; the name of certain pro- 

 cesses, as the styloid process of 

 the ulna and of the temporal 

 bone. 



Succus intestinalis, iutestin.il 

 juice; the secretion of the 

 glands of the mucous membrane 

 of the small intestine. 



Sudoriparous, suclor sweat, and 

 pario I bring forth ; the sudori- 

 parous glands secrete the per- 

 spiration. 



Sutura, sutura a seam. While in 

 surgery it is applied to any seam 

 for closing a wound, is in ana- 

 tomy applied to an articulation 

 in which iwo edges of bone are 

 immovably united, with only 

 periosteum between them. 



Sympathetic, <r(>v together with, 

 and -rraOos suffering; the name 

 given to the ganglionic system 

 of nerves, on account of its con- 

 nection with the cerebro-spinal 

 system. 



