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U-tube 5:76, 103
Übergangstück of uriniferous tubule (see Intermediate
segment of uriniferous tubule)
Uca 5:342
Uganda 2:324
Ukraine 2:322
Ulemosaurus 9:299
Ulna 1:85, 87, 91, 93, 95, 98, 101, 103–105, 108, 110–111; 4:16–19, 23, 27–28, 32–35, 38, 41, 45–47, 51, 58, 94; 21:13, 21, 25, 31, 33, 59, 102, 105, 110–118, 120, 124–125, 132, 135, 264, 280, 282–283, 285, 289–291, 293, 300–303, 306–307
development 15:74, 77, 80
ossification 14:313
suppression 15:115
-ulnare joint 21:10
Ulnar
collector (see Ventral collector of anterior limb)
condyle 21:101–102, 105–110, 112, 114
epicondyle 4:16, 22, 36, 40–41, 45–47, 51
fossae 21:106–110
nerve 4:23
patella 1:91, 93, 103
Ulnare 4:17–19, 41, 45–46; 15:74, 77, 80; 21:115– 117, 119–126, 289–291, 305–307
Ultimobranchial body 3:118, 203, 223, 226, 235–236, 238–239
Ultracentrifugation 3:37
Ultrafiltrate 5:448, 450, 482
Ultrafiltration 5:1
Ultrastructural techniques 18:153
Ultrastructure 5:231, 414–419, 423–424, 426, 431, 433–434, 437, 439, 467, 472; 19:21, 111–112, 493
Ultraviolet light 16:163; 18:168, 302
and reproduction 15:28
and Vitamin D 14:210
secretions absorbing 18:168, 302
vision 18:329, 377, 396
Ultrocalamus 8:25
Ulva 5:392
Uma 5:27, 132, 144, 160, 169, 204, 243, 245, 298, 420, 491; 7:188, 484; 8:656, 684; 12:69, 103, 110, 330, 335, 346–347, 360, 376, 431, 461, 468, 471, 487, 489, 496–497; 13:65, 183, 211; 16:29, 117, 140, 212, 248, 464–465, 515; 18:173, 433, 436; 20:80, 84–85, 293; 21:68
adrenal 3:280
blood cell morphology 3:76
blood chemistry 3:43
ear 2:223, 266, 271
nose 2:119, 128–130, 134–135, 159, 178–180
notata 18:257, 269, 362; 20:293, 305
pituitary 3:170, 192
scoparia 21:44, 47, 57
thyroid 3:223, 227
urinogenital system 6:59–60, 63, 70, 78, 89, 97, 100, 121
Umbilical
blood vessels (see also Arteries; Veins) 15:538– 539, 546, 553, 559
cord 15:536–540
region 14:362
stalk 14:379, 404, 439, 443; 15:538
vessels 6:456; 14:4
Umbilicus 14:165, 379–380, 499, 512, 535–536
Umbrivaga 16:149; 19:227
mertensi 19:164, 217
pygmaeus 19:217; 20:656
Unanesthetized specimens 5:39, 50, 256, 350
Uncinate process 1:230, 235, 237, 253, 260, 301; 11:378–379, 429
Unconditioned
response 7:558
stimulus 7:558
Underwater hibernation 13:81–82
Underwoodisaurus 12:123
Undulatory locomotion 1:204, 299
Unechis 8:26; 12:132; 13:301, 308, 310–311; 15:654; 16:205, 282, 482–484, 520; 19:104, 222
boschmani 8:25
brevicaudus 8:26
carpentariae 8:26; 20:630
flagellum 8:26
gouldii 8:26; 20:629
monachus 8:26
nigrostriatus 8:26
Ungaliopheinae 21:543, 565
Ungaliophiinae 19:219; 20:460
Ungaliophis 19:33, 81, 219; 20:353, 445, 460, 466–468, 470–471, 474; 21:530, 553, 610
continentalis 19:189
panamensis 19:189; 20:462, 467, 471, 609
pit organs 2:301
Ungual phalanghes 21:133, 186, 188, 306, 308, 312, 382
Unguis 21:130
Unicellular
organisms 5:156
poikilotherms 5:128
thymic corpuscle (see Myoid cell)
Unicipital rib 1:209, 222, 227, 245, 252, 278
Unimodal temperature distribution 12:218
Union of epiphyseal centers 1:101–104
Union of Soviet Socialist Republics 2:322
United States of America 2:321
Unmasking effect 8:124
Unmyelineated axon 2:156
Unsheathed receptor 9:418
Untere Ausbuchtung (see Ventral recess)
Untere Nasendrüse (see Medial nasal gland)
Untere Vorhofsdrüse (see Medial nasal gland)
Upper
Eocene anguids 15:331
eyelid 2:9, 11, 14, 63, 67, 74–75, 88; 4:212
jaw 2:302; 20:352, 355–356, 367, 371, 392, 400, 409, 414, 416, 433, 437–438, 440, 443, 459, 472, 486, 510, 587, 589, 591
jaw kinesis 20:367, 588
labial scale (see Supralabial scale)
lethal temperature 12:293
lip 2:224–225
nasal chamber (see Extraconchal space)
Permian reptiles 15:338
selected temperature 12:293
temporal arch (see also Dorsal temporal arch) 20:44, 56, 63, 78, 91, 103, 106, 108, 110, 115–118, 128, 130, 136–137, 140, 144, 149, 151, 157, 167, 173, 175, 184, 187, 194, 198, 208, 210, 217–219, 221, 224, 227, 233, 235–236, 240–241, 251, 254, 261–262, 275
temporal fenestra 20:14, 19, 40, 42, 44, 56, 65, 68, 74, 84, 91, 99, 103, 108, 110, 115–116, 118, 122, 138, 140, 144, 149, 151–152, 154, 157–158, 160, 162, 165–168, 170, 175, 178, 184, 186, 189–190, 194, 198, 202–203, 208, 210, 214, 217–218, 224, 227, 230, 233–234, 249, 260–262, 275, 282–284, 287
-turbinal (see Concha)
Uracentron 9:339; 15:329; 16:29, 130, 140, 256; 20:80, 82, 293
axial muscles 11:357
axial skeleton 1:269
Uraniscodon 7:140, 484; 12:105–106; 16:139; 21:104, 338, 357, 361
Uranocentrum 12:399
Uranyl acetate 3:241–242, 244, 333; 6:226; 11:324
Urate salts (see also Urea) 5:415, 488, 491
secretion 5:496
transport 5:492–493, 495, 497
Urates 5:10, 383, 390, 413, 458, 488–497
Urea 3:8–12, 25–26, 52–53; 5:67, 383, 483, 487, 489–490; 8:321, 646; 12:287, 326–335, 341–349, 352–353, 355, 361, 366, 368; 13:84, 88–89; 14:232, 235, 377; 15:565–566, 575; 16:567; 19:489, 498, 515
-cycle 3:52
determination 5:60
dissociation by 8:177
Urease 3:26; 5:60; 15:566
Ureotelism 5:489
Ureter 6:19–21, 24–29, 31, 38, 42–44, 49, 65, 67, 85, 88, 106, 120
development 15:187, 192–194, 196, 201–202, 206, 218
effect of testosterone 15:250
Ureteral tubule 6:23
urinary nitrogen 5:488
urine 5:97, 450, 455, 465–469, 471–472, 474– 476, 478, 480–482, 486, 488–491, 498
Uretere primaire (see Wolffian duct)
Ureteric bud 6:20, 120
Ureters 5:96–97, 383, 389, 491; 14:441
Urethane 5:46–47, 51
Urethra 6:437
Uric acid 3:8–12, 25–26; 5:67, 388, 458, 487, 489–491, 496; 6:46; 12:287; 13:89; 14:235, 377; 15:565–566; 18:305; 19:498, 515, 524
Uricotelic animals 5:172
mode 5:10
Uricotelism 5:489
Urinary
bladder 3:214, 271; 5:57–58, 98, 228, 327, 382–384, 389, 394, 398, 401; 6:1, 25–29, 88, 274, 332, 336–338, 340, 395, 407, 434, 437, 443; 14:144
bladder, epithelia 5:55
energy loss 13:236
excretion 5:81, 450
granule 6:33
loss 5:381
nitrogen excretion 5:81, 388, 483, 486–489
papillae 5:97
reservoir 6:27
sinus 6:274
solutes 12:326, 362–366, 487
tract 5:353, 360
water loss 5:385, 399
Urination 16:390
Urine 3:13, 15, 214, 243; 5:10, 37, 55, 70, 96–98, 100, 102, 353, 360, 370, 372, 381–385, 389–390, 400–401, 405–406, 447, 451, 455–456, 459– 460, 462–463, 470, 474–478, 480–483, 486, 488–490, 496, 498; 6:31, 44, 116, 118; 12:254, 325–326, 342, 344, 347–348, 350, 352, 354, 361–363, 365–366, 368, 370, 487, 497; 13:72, 85, 88–89, 236; 18:117, 178, 193, 205
collection 5:96
pH 5:481, 486, 488
/plasma ratio 12:364, 370, 374
urinary duct 18:116
urination 18:164
Uriniferous tubule 6:21–23, 29–37, 39–40, 44–45, 47–48, 70, 120
Urinogenital
lymphatics of 6:434–444
papilla 14:294, 296, 298
system 6:1–157
development 14:14, 311, 439
Urnierenbläschen 6:14
Urodaeal glands 6:296
Urodaeum (see also Cloaca) 18:116, 155, 165
compartments 15:205
development 15:194–205, 218, 226, 230–231, 233, 239, 245
effect of estrogens 15:253–254, 256
function 15:206
gland (see Gland, urodaeal)
structure 15:207–215
Urodela 19:46, 67, 316, 537, 567–568
chondrocranium 11:207
epiphyses and sesamoids 1:84, 90, 107
head muscles and visceral skeleton 4:162
histology of gut 6:277
nose 2:102, 183
parathyroid 3:235, 240
urinogenital system 6:3, 110
Urodele(s) 9:17; 10:167; 21:51, 293, 304, 312, 319, 322, 328, 330, 355, 366–367
aortic arches 14:495
bone marrow 14:614
cranial nerves 14:495
effect of temperature 15:282
effect of testosterone 15:276
regeneration 14:558; 15:303, 390–391
Urodeum (see Urodaeum)
Urogenital (Fossa) 18:165
connections 15:171–174
crests 15:214
organs 19:39
system (see also Urinogenital system) 10:9, 39, 45
Urohyale (see Hypoglossum)
Uromacer 7:503; 16:149; 19:226
catesbyi 19:217
frenatus 18:485; 19:166, 217
oxyrhynchus 19:217
wetmorei 19:217
Uromacerina 19:227
richardini 19:217
Uromastyx 5:132, 143, 168, 199, 201, 203, 205, 280, 307, 369, 393, 401–402, 423, 424; 7:20, 101, 114, 158, 163–164, 168, 171, 174, 182, 189, 302, 304, 489; 8:66, 144, 612, 619, 631, 633, 636–637, 640–642, 662, 678; 9:157, 330; 10:203; 12:107–108, 253, 330, 339, 346, 348–349, 351, 354–355, 357, 362–363, 365–367, 376, 383–384; 13:78, 81–82, 86, 90–91, 170; 14:617, 625–626, 628–629; 15:251, 330–331, 343, 581; 16:50, 114, 137, 251–252; 17:181–182, 196, 207, 561; 20:52– 54, 58–59, 63, 78, 91–94, 96–98, 100–105, 258, 260, 266–267, 270–271, 305; 21:68, 76, 88, 140, 145, 159–160, 170, 172, 238, 250, 252, 259, 266, 276, 279, 288–289, 294, 298–303, 338, 347, 356–357, 361–362, 374, 378–379, 381–383, 388–391, 393, 396
acanthinurus 19:22, 80; 20:294, 305
adrenal 3:280
aegyptius 19:550, 552, 579; 20:94, 99, 294, 305; 21:7, 123
axial muscles 11:357, 385
axial skeleton 1:247, 258, 269
blood chemistry 3:5, 9, 28, 33
chondrocranium 11:34, 91
dentition 1:157–158, 160
ear 2:238, 266, 271
eye 2:20, 27
hardwicki(i) 19:22, 80, 407, 418; 20:294, 305; 21:7, 208
histology of gut 6:236, 278
internal relief of gut 6:177–178, 182, 185, 188
jaw muscles 4:315, 318, 326–330, 332–340, 398, 413–414, 416, 419, 477
lymphatics 6:336–337, 339, 355, 357, 359, 362, 381, 390, 394, 397, 402, 406, 425, 453
muscle tissue 11:283, 336
nose 2:120
spinipes 20:294
thymus 3:113
thyroid 3:212, 223, 227
urinogenital system 6:37, 49, 59, 61, 71, 76, 79, 87, 98, 116
Uropeltidae 7:9, 498; 8:73, 695; 10:223, 225, 239; 12:126, 134; 15:645, 664, 667, 671; 16:38–39, 54, 121, 151, 206, 454; 19:127, 151–152, 159, 161–162, 165, 186, 218, 415; 20:354, 390, 396, 399–400, 402–416, 419–420, 422–423, 427, 430–432, 491, 563, 585, 590, 601; 21:513, 533, 544–545, 549
axial skeleton 1:204, 284–285, 288–292, 296–297
chondrocranium 11:178–180, 202
dentition 1:179
ear 2:252
eye 2:54
jaw muscles 4:371, 373–374, 423, 426, 430, 432–433, 440, 468–470, 480
muscle tissue 11:280, 296
nose 2:120
taxonomic literature 2:320
urinogenital system 6:30
Uropeltinae 21:544–545, 548
Uropeltis 8:695; 12:134; 16:40, 151, 232; 19:105, 148, 218; 20:402–403
arcticeps 19:186
axial skeleton 1:289, 291
brevis 19:186; 20:406, 602
broughmani 19:186
ceylanicus 19:186; 20:410, 602
chondrocranium 11:178, 180
ear 2:227, 268, 271
ellioti 19:186
grandis 19:186; 20:602
jaw muscles 4:423, 444–445, 469, 480
liura 19:186
macrolepis 19:186
madurensis 19:186
melanogaster 19:186
myhendrae 19:186
nitidus 19:186
nose 2:179
ocellata(us) 19:186; 20:404, 409, 602
petersi 19:186
phillipsi 19:419
phipsoni 19:186
pulneyensis 19:186; 21:545
rubrolineatus 19:186, 415, 419
rubromaculata 19:186
smithi 20:602
woodmasoni 19:186; 20:602
Uroplatidae 21:110
Uroplatus 16:124, 252, 260; 19:24; 20:117–118, 120, 296; 21:79–80, 89, 95, 141, 155, 160, 189, 228, 275, 279, 288, 397
axial skeleton 1:241, 253, 259–260, 262, 268; 15:328, 344
dentition 1:161
ear 2:271
eye 2:26, 30–31, 89
fimbriatus 19:26, 39, 80; 20:296, 306
internal relief of gut 6:177, 183
jaw muscles 4:348, 350–351, 418–419, 478
sikorae 19:26, 80
Urosaurus 5:30, 132, 144, 164–165, 175; 7:16, 51, 68, 187, 189, 270, 275, 310–311, 436–437, 451– 452, 485; 12:52, 103, 461, 489; 13:59, 103, 115, 125–126, 128, 133, 211, 235, 237, 250, 252, 256, 258–259, 263–265; 15:348; 16:23, 50, 117, 140, 249, 363, 445–446, 453, 463–465, 477, 515–516; 18:334; 20:80, 86, 293
bicarinatus 18:362
epiphyses and sesamoids 1:95, 105, 109– 110
eye 2:26, 28
graciosus 20:305
ornatus 18:87, 334–337, 362, 364–365, 382, 396; 20:293
urinogenital system 6:59
Urostrophus 15:329; 16:257
axial skeleton 1:269
ear 2:271
torquatus 20:304
vautieri 20304.
Urotheca 19:100, 229
guentheri 19:217
Ursids 21:336
Ursus 16:11, 60
USP 5:58
Uta 5:129, 132, 138, 140–144, 158, 160, 162, 164, 175, 177–179, 181, 183, 185, 195, 255, 379; 7:8, 10, 16, 51, 54, 94–95, 103, 161–163, 166, 169–172, 174, 179–181, 183–184, 187–191, 193–194, 196, 199–201, 244–246, 262, 269–270, 275, 310, 362, 370, 411–412, 414–415, 418, 431, 436–437, 439, 441–442, 444, 447, 449–454, 458; 8:596, 636; 9:330; 12:34, 54, 62, 94, 98, 103, 302, 456, 461–462, 467, 474, 489; 13:57– 58, 128, 179–181, 183–184, 207, 214, 237, 255–256, 260, 289, 309, 311; 14:11, 700, 702, 709; 15:42, 346, 349, 588; 16:12, 21, 49, 117, 124, 140, 242, 250, 261–262, 265, 464–465, 516; 17:653; 18:334, 433; 20:80, 293
adrenal 3:280
antiquua 20:305
blood cell morphology 3:76
blood chemistry 3:9, 30, 36
chondrocranium 11:86–87, 89
ear 2:266, 271
eye 2:26, 28
nose 2:119, 128
palmeri 18:329, 362–364
pituitary 3:170
stansburiana 18:26, 89–90, 172, 249, 254, 256–257, 276, 387–391; 20:305
stansburiana stejnegeri 18:334
urinogenital system 6:59, 72–73, 78, 82, 84, 97, 100, 104, 116, 118
Uterine
artery 6:86
blood collectors (see also Arteries; Veins) 15:552–553, 555–559, 594
chamber 15:534, 536–537, 585–586
collectors 6:440–441
contractility 15:589–591
contraction 17:595
effect of oxytocin 15:589, 591
epithelium 15:534, 541, 543, 546, 550–552, 554–555, 557–558, 560–561, 563–564, 594
folds 15:555–556, 558–560
gland(s) 6:85, 89, 92, 95; 15:47, 550
lymphatic net 6:440
mucosa 15:549–550, 554, 559–560
muscle 14:220
tube (see Uterus)
vein 6:86
Uterus 6:54, 85–87, 90, 92, 94–95, 338, 353, 434, 440–441
secretory activity 15:563–564
strip 10:247
vascularization 15:534–537, 542, 552, 575, 585–586, 592–593
Utricle 2:196, 203–208, 210, 218–219, 228–229, 234, 236, 252, 256, 259–260
Utricular macula 2:204–205, 207, 210, 218
Utriculosaccular duct 2:207
Utriculus 9:13; 10:215, 219; 11:140, 166
UV (see Ultraviolet light)
Uzbekistan 2:322
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