ISDEX. 



823 



Voice, human, produced by vibra- 

 tion of vocal cords, 604, 6 1 8. 

 impaired by destruction of acces- 

 sory nerve, 564. 

 in eunuchs, 616. 

 influence of age on, 615. 



of arches of palate and uvula, 



618. 



of epiglottis, 612. 

 of sex, 614. 

 influence of ventricles of larynx, 



619. 



of vocal cords, 604, 610. 

 in male and female, 614. 



cause of different pitch, 615. 

 modulations of, 617. 

 natural and falsetto, ib. 

 peculiar characters of, 616. 

 varieties of, 614. 

 Volatile bodies, influence of, on 



sense of smell, 633. 

 Voluntary muscles. See Muscles. 

 Vomiting, 



action of stomach in, 289. 

 mechanism of, 223. 

 influence of spinal cord in, 505. 

 voluntary and acquired, 290. 

 Vowels and consonants, 619. 

 Vulvo- vaginal glands, 718. 



w. 



Walking, muscular action in, 598, 



601. 



Warm-blooded animals, 235. 

 Water, 



absorbed by skin, 437. 



by stomach, 281. 

 in blood, variations in, 79. 

 conduction of sound through, 683 

 deficient in thirst, 84. 

 exhaled from lungs, 217, 435. 

 from skin, 433. 



Water, continued. 

 forms large part of human body, 



17- 

 influence of on coagulation of 



blood, 66, 67. 

 on decomposition, 10. 

 in urine, excretion of, 446. 



variations in, 452. 

 vapour of in atmosphere, 210. 

 Wave of blood in the pulse, 149. 

 Weight, relation to capacity of 



chest, 202. 

 sensation of, 710. 

 White corpuscles. See Blood-cor- 

 puscles, white ; and Lymph- 

 corpuscles. 



fibro-cartilage, 41, 43. 

 White substance of nerve-fibre, 



466. 

 Will, 



reflex actions amenable to, 503- 

 5, transmission of through cord, 

 498. 



Willis, circle of, 181. 

 Wolffian bodies, 777. 



Y. 



Yelk, or vitellus, 720. 



changes of, in Fallopian tube, 

 740. 



in uterus, 742. 

 cleaving of, 740 

 constriction of by ventral 



lamina, 745. 

 Yelk-sac, 747. 

 Yellow elastic fibre, 37. 

 fibro-cartilage, 41, 43. 

 spot of Sonimering, 639, 641. 



2. 



Zona pellucida, 719, 740. 



