860 



Subject Index 



Ungulates — (Continued) 



even-toed, 751, 754-757 



odd-toed, 751-754 

 Unguligrade, 583, 751 

 Unipolar cell, 140, 316, 317, 318 

 Unity of plan, 340, 343 

 Upper arm (brachium), 94, 131 

 Upupa epops, 552 

 Urea, 34 

 Ureter, 80, 81, 82, 85, 86, 280, 531, 



658 

 Urethra, 80, 81, 82, 85, 86, 186, 280, 531, 



658 

 Urethral canal, 660 



groove, 659 

 Urinary bladder, 80, 185, 186, 276, 285, 

 293, 295, 474, 643, 654 



duct, 87 

 Urinogenital ducts, 79-83, 87, 88, 154, 276, 

 283, 285, 474 



groove, 659 



sinus, 650, 654 



system, female, 655 

 ' male, 652, 657 

 Urochorda, 231, 394, 396, 397, 398, 399, 



400, 401, 404 

 Urodele(a), 70, 77, 90, 97, 238-240, 452- 



454, 461 

 Urodeum, 530 

 Uropygial gland, 511 

 Uropygium, 511 

 Urostyle, 455 

 Ursidae, 747 

 Ursus, 747 

 Uterine tube, 646 



wall(s), 293-295 

 Uterus, 80, 185, 186, 227 



bicornis, 647, 648 



bipartitus, 647, 648 



duplex, 647, 648 



masculinus, 663 



simplex, 648 

 Utriculus, 208, 209, 211, 663, 688, 689 



Vagina, 647, 648 



masculina, 664 

 Vaginal cecum, 648 

 Vagus (pneumogastric) nerve, 28, 160, 



167, 178 

 Vallate papillae, 671, 672 

 Valve (s), atrio-ventricular, 65, 622 



bicuspid, 622 



breathing in fishes, 417 



ileocolic, 639, 640 



mitral, 622 



semi-lunar, 65, 621 



sino-atrial, 65 



spiral, in intestine, 28, 30, 641 



tricuspid, 622 



in veins, 65, 67 

 Vampire, 739 

 Vane, 506 

 Vas aberrans, 80 



Vas deferens (ductus deferens) (sperm 

 duct), 79, 80, 2S3, 474, 650, 652 

 Vasa efferent ia, 80, 650 

 Vascular patterns, 626-629 

 Vasodentine, 46 



Vegetal hemisphere, 249, 250, 252, 253, 

 255, 257 



pole, 247, 248, 249, 250, 252, 254 

 Vein(s), 63, 69-78 



abdominal, 74 



allantoic, 293 



arcuate, 86 



azygos, 66, 71, 73 



cardinal, anterior, 73 

 common, 65 

 post-, 64, 71, 73, 74, 78 

 pre-, 73 

 sub-, 73, 74 

 supra-, 71, 73 



caudal, 64, 74, 77 



coronary, 71 



development of, 74, 75 



hemiazygos, 71 



hepatic, 32, 64, 71, 73, 74 



hepatic-portal, 71 



iliac, 64, 71, 74 



jugular, 66, 71, 73, 74 



lateral, 73 



of mammals, 630, 631, 632 



mesenteric, 64 



postcardinal, 64, 71, 73, 74, 78 



postcava, 32, 64, 71, 73, 74, 78 



precardinal, 73 



precava, 64, 71, 73, 631 



pulmonary, 64, 69, 71 



renal, 71, 74, 78, 86 



renal-portal, 78 



spermatic, 652 



structure of, 65, 67 



subcardinal, 73, 74 



subclavian, 64, 66, 71, 73 



subintestinal, 269 



supracardinal, 71, 73 



valves of, 65, 67 



vorticose, 203 

 Vena cava, anterior (precava), 73 



posterior (postcava), 73 

 Venous sinus, 63, 64, 73, 622 

 Ventilation of lungs, 524, 620 

 Ventral, 13 (see under noun entries) 

 Ventricle(s) of brain, 145, 146 



fourth, 147, 148, 151 



of heart, 64, 65, 67-69, 71, 625, 626 



lateral, 150 



third, 148, 149 

 Ventricular folds ("false vocal cords"), 



614 

 Vermiform appendix, 641 



process, 14 

 Vermis, 151 

 Vertebra (e), 106, 144, 191 



archetype, 348 



caudal, 106, 455, 597 



cervical, 4, 109, 514, 515, 596, 764 



coccygeal, 4, 109 



