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Index 



Tuna, 588 



Tundra, montane, 651, 656 



northern, 651, 653 

 Tunic, 561, 562 

 Tunica, 169, 170 

 Tunicate, 561 

 Tunicin, 561 



Turbellaria, 404-409, 645 

 Turbinates. 103, 150 

 Turkey, 625 



Turtle, 46, 75, 82, 91, 567, 603, 

 604-606, 612, 613 



parasites of, 463 

 Twinning, 295 

 Twins, 295 

 Tympanic canal, 221, 222 



membrane, 220. 221^ 222, 526 

 Tympanum. 523 

 Type, 43 



Typhlosole, 457, 473, 571 

 Tyrannosaurus, 614 



U 

 Uca, 489, 507 

 Ulna, 101, 109 

 Umbilical cord, 285, 292 

 Umbo, 472 

 Umbra, 590 

 Umbrella ant, 534 

 Undulating membrane, 357 

 Unguis, 85, 86 

 Ungulate, 130, 256, 628, 640 

 Unit, filtration. 185 



functional, 195, 196 

 Universal donor, 181 



recipient. 181 

 Urea, 77, 78. 186, 190, 191 

 Urechis. 464, 465 

 Ureter, 72, 72,, 187, 189 

 Urethra, 187, 189, 258 

 Uric acid, 186. 191 

 Urinary bladder, 61. 187. 191 



system, 40. 72, 184-191 

 Urine, 72, 189-191, 233, 238, 242 

 Urochordata, 561-564 

 Urocyon, 630 

 Urodela, 596, 597-598 

 Uropod, 495. 496, 499 

 Urostyle, 57 

 Uterine cycle, 263 

 Uterus, 72,, 242, 247-248, 260, 261, 



262-263, 292. 579 

 Utriculus, 221, 223, 224 

 Uvula, 131, 150 



V 

 Vacuole, 268 



contractile, 354. 360, 369 

 food, 349, 360, 369 

 water, 349 



Vagina, 260, 261 



Vagus nerve, 200, 205 



Valve, auricular-ventricular, 63, 163 



bicuspid, 163, 164 



heart, 173 



ileo-caecal, 134 



pyloric, 61, 132, 142, 143 



semilunar, 63, 163, 172 



spiral, 63, 64 



tricuspid, 163, 164 



vein, 170, 171, 175 

 Vampire bat, 133 

 Varanops, 626 

 Varanus, 608 

 Varying hare, 650 

 Vas deferens, 257 

 Vasa efferentia, 72,, 257 

 Vasalius, 243 

 Vasoconstriction, 201, 206 

 Vasodilation, 201, 206 

 Vegetal pole, 280 

 Vein, 66, 161 



adrenal, 169 



anterior vena cava, 66, 67 



azygos, 168 



caudal, 168 



cutaneous, 66 



dorsal lumbar, 67 



femoral, 67 



gastro-epiploic. 168, 169 



hepatic, 68. 168 

 portal. 66. 68, 169 



histology. 170, 171 



iliac, 68, 168 



iliolumbar, 168 



innominate, 66. 168, 183 



intercostal. 168 



jugular, 66. 68, 169, 183 



lumbar, 169 



mesenteric, 168 



pelvic. 68 



phrenic, 168 



postcaval, 163, 168 



posterior vena cava, 66, 68 



precaval, 163, 168 



pulmonary, 64, 66, 164, 166 



renal, 67, 168 

 portal, 66, 67 



sciatic, 67 



splenic, 168, 169 



subclavian, 66, 168, 183 



ventral abdominal, 68 

 Velar tentacle. 565 

 Velella, 397 

 Veliger, 466, 468. 476 

 Velum, 386, 393, 565, 571 

 Vena cava, anterior, 66 



