INDEX 



467 



Tunica adventitia, 227 



albuginea, 312 



mucosa, 227 



muscularis, 227, 228 



submucosa, 227, 228 

 Tympanic membrane, 419 



U 



Ultimobranchial bodies, 253, ^^^ 

 Umbilical cord, 235 



stalk, 83 

 Ureters, 304, 307 

 Urethra, 303, 308, 323 

 Urinary canal, 303 



organs, 304-308 



sj'stem, 290 

 Urochordates, 7, 9, 22, 231, 249, 348, 406, 



416 

 Urodeles, 201 



Urogenital system, 290-323 

 Uterine tubes, 308 

 Uterus, 310, 323 

 Uvula, 226 



Vagina, 310, 32^ 

 Vaginal glands, 1 26 



sacs, 321 

 Vagus nerve, 352, 354, 355, 375 

 Vallate papillae, 223 

 Vascular system, 262-289 

 Vasa vasorum, 288 

 Vasoconstrictor nerves, 288 

 Vasodilator nerves, 288 

 Veins, 262, 277, 287, 412 

 Ventricle, 283 

 Vermiform appendix, 234 

 Vertebrae, 102, 148 



cervical, 149 



dorsal, 149 



kinds of, 150 



lumbar, 149, 150 



sacral, 181 



structure, 149 



thoracic, 149, 150 



Vertebrae, "true," 149 

 Vertebral canal, 149 



column, 146, 149, 151 

 Vertebrates, 12, 22, 62, 67-69, 72, 94, 

 117, 129, 131, 146, 167, 176, 182, 

 205, 216, 218, 219, 220, 224, 225, 

 228, 231, 242, 251, 256, 265, 296, 

 298, 343, 347, 349, 352, 376, 377, 

 382, 400, 416, 425 

 ancestory of, 427 

 eye, 412 

 Vestibular nerve, 424 

 Vestibule, 217, 311, 323 

 Visceral fibers, 381, 382 

 muscles, 195, 205, 213 

 skeleton, 158, 167, 170, 172, 173,174, 

 177 

 Vitelline duct, 235 

 membrane, 28 

 Vitreous humor 409 

 Viviparity, 30, 31, 34, 37 



W 



Walk of digestive tract, 227 

 Warmth, 395 



Waves, peristaltic, 233, 239 

 Wax glands, 1 26 

 Wharton's duct, 221 

 White matter, 370 



rami communicantes, 381 

 Wolffian folds, 187- 



X 



Xenarthra, 19, 23 

 Xiphvid. 154 



Yolk, 27, 34, 41, 57, 78 



plug, 47, 48 

 sac, 34 



Zygapophyses, 150 



