318 



GLOSSARY. 



Trabecula, a little rafter. 



Trachea, Tpa^us rough; the wind- 

 pipe. See the word artery. 



Tragus, Tjmyos a goat ; the emi- 

 nence in front of the opening of 

 the ear ; sometimes hairy, like 

 a goat's beard. 



Trapezium, a geometrical figure; 

 the name of the carpal bone 

 which supports the thumb. 



Trapezoid, a geometrical figure; 

 the name of one of the carpal 

 bones. 



Tricuspid, trta three, and cuspijs 

 a pointed extremity; the tri- 

 cnspid valve of the heart, con- 

 sisting of three cusps. 



Trigone, Tpia three, and ywvia an 

 angle; the part of the bladder 

 between the openings of the 

 ureters and arethra. 



Trochlea, a pulley. 



Tuberosity, tuber a lump ; a thick 

 prominence of a bone. 



Turbinated, turbo a turning round ; 

 the turbinated bones, all more 

 or less curved. 



Tympanum, a timbrel or drum; 

 the cavity termed the drum of 

 the ear. 



Ulna, wXeV); the elbow; the inner 



bone of the fore-arm. 

 Umbilicus, the navel. 

 Unciform, uncus a hook ; the name 



of one of the carpal bones. 

 Urachus, ovpov urine, and e'x&o I 



hold; the constricted part of 



the allautois, which remains as a 



cord ascending from the bladder. 

 Ureter, ovpirn}p the duct from the 



kidney to the urinary bladder. 

 Urethra, ovpntipa the excretory 



duct of the bladder. 

 Uvula, a little grape ; the pendant 



body at the back of the soft 



palate. 



Vallecula, a little valley ; the hol- 

 low in the middle of the under 

 surface of the cerebellum. 



Valvulsa conniventes, valves ap- 

 proximating one to another ; the 

 folds of mucous membrane 

 which project into the small in- 

 testine. 



Velum interpositum, interposed 

 curtain ; a fold of pia mater pro- 

 longed beneath the fornix, and 

 supporting choroid plexuses. 



Velum palatse, the soft palate. 



Vense comites, companion veins ; 

 two or more veins coursing in 

 company with an artery. 



Ventricle, ventrlculm (venter a 

 belly) a little cavity. The ven- 

 tricles of the heart are the 

 cavities, the walls of which pro- 

 pel the blood. 



Ventriloquist, venter the belly, 

 and loquor I speak; one who 

 has the art of managing his 

 voice so as to make it appear 

 that the sounds emanate from 

 a different direction. 



Vermicular, vermis a worm ; ver- 

 micular movement in waves, 

 such as are seen in a worm. 



Vertebra, verto I turn ; a bone of 

 the spinal column. 



Vestibule, vestibulum an entrance. 

 The vestibule of the ear is the 

 part of the labyrinth from which 

 the semi-circular canals come 

 off. 



Vitelline, vitellus the yolk of an 

 egg; belonging to the yolk, as 

 the vitelliue membrane. 



Vitreous, v'dreus of glass ; the vit- 

 reous humor is named from its 

 glassy appearance. 



Zona pellucida, the pellucid 

 zone surrounding the yelk of 

 the unimpregnated ovum. 



Zonule of Zinn, the plicated zone 

 formed by the suspensory liga- 

 ment of the lens of the eye. 



Zygoma, tuyov a yoke; the arch 

 formed by the malar bone and 

 zygomatic process of the tem- 

 poral bone. 



