434 



ESSENTIALS OF PHYSIOLOGY. 



Ventricles, capacity of, 178. 



pressure in, 195. 

 Ventricular diastole, 179. 



folds in larynx, 148. 



systole, 179. 

 Vesicular murmur, 249. 

 Vestibular nerve, 70, 152. 



functions of, 153. 



membrane, 143. 



nucleus of, 70. 

 Vestibule, 151. 

 Vestibulo-spinal tract, 53. 

 Villas, 329. 



changes in, during fat absorption, 332. 

 during protein absorption, 330. 



structure of, 329. 

 Visceral nerves, 102. 

 Vision, 120. 



binocular, 138, 140. 



colour, 135. 



direct, 138. 



field of, 138. 



indirect, 132, 138. 

 Visual acuity, 123. 



adaptation, 133. 



angle, 122. 



area, 90. 



fatigue, 136. 



judgments, 134, 139. 



path, 90. 



purple, 116, 130. 



sensations, 133. 

 Weber's law, 107. 



stimuli, time relations of, 134. 

 Visuo-psychic area, 86, 90. 

 Visuo-sensory area, 82, 86, 90. 

 Vital capacity, 249. 

 Vitreous humor, 119. 

 Vocal cords (folds), 148. 



Voice, 148. 



pitch of, 1 50. 



production of, 148. 

 Volume of an organ, 225. 

 Voluntary contraction, 31. 

 electrical changes in, 31. 



muscle, 18. 

 Vowel sounds, 150. 



Wallerian degeneration, 44. 



method, 51. 

 Warm points, 108. 

 Water, absorption of, 328, 334. 

 Weber's law, 107. 



in vision, 107. 



White blood corpuscles (see Leucocytes). 

 White rami communicantes, 101. 

 White, sensation of, 133. 

 Word-blindness, 93. 

 Work done by heart, 198, 204. 



by muscle, 29. 



Xanthine, 19, 359. 

 Xanthoproteic reaction, 9. 

 Xylose, 5. 



Yeast, action on dextrose, 6. 

 Yellow spot, 118. 

 Young-Helmholtz theory, 135. 



Zein, food value of, 358. 

 Zona fasciculata, 401. 



glomerulosa, 401. 



pellucida, 411. 



reticularis, 401. 

 Zonula ciliaris, 119. 

 Zymogen granules, 299, 309. 



in pancreas, 319. 



in salivary glands, 299. 



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