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The intestines of a shark are much shorter than those of mammals. Sharks have compensated for this problem by having a spiral valve, or a
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material in the ileum for an extended period maximum nutrient absorption is ensured. For this reason, many sharks and related
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until sufficiently broken down for passing through the valve region, or are
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feed very infrequently. The food passes into the comparatively short
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235:) through their lower intestine. Such objects instead remain in the
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of the ileum is that sharks cannot pass large hard objects (such as
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This article is about the intestinal structure. For other uses, see
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Sharks also possess a rectal gland that removes excess salt.
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of the shark almost fully digested, and then out the
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227:A consequence of the spiral valve constricting the
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152:is the corkscrew-shaped lower portion of the
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877:Tradeoffs for locomotion in air and water
116:Learn how and when to remove this message
292:
7:
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54:adding citations to reliable sources
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704:Electroreception and electrogenesis
1471:. You can help Knowledge (XXG) by
281:Physical characteristics of sharks
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388:Environmental impact of fishing
41:needs additional citations for
1:
21:Spiral valve (disambiguation)
473:intramembranous ossification
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1450:
852:Fin and flipper locomotion
822:Sequential hermaphroditism
709:Jamming avoidance response
426:
18:
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16:Part of a shark intestine
192:. A modification of the
1368:Glossary of ichthyology
930:Diel vertical migration
1467:-related article is a
734:Surface wave detection
699:Hydrodynamic reception
373:Diseases and parasites
141:
138:Ginglymostoma cirratum
132:The spiral valve of a
872:Undulatory locomotion
689:Ampullae of Lorenzini
303:, 9th edition, p. 752
131:
1100:Genetically modified
50:improve this article
905:Aquatic respiration
792:Life history theory
744:Weberian apparatus
142:
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1358:Fish common names
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900:Aquatic predation
724:Capacity for pain
453:Age determination
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363:Ethnoichthyology
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299:Campbell Reece,
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186:Lepisosteiformes
162:Acipenseriformes
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782:Ichthyoplankton
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669:Digital Library
664:Teleost leptins
603:Shark cartilage
527:pharyngeal slit
522:pharyngeal arch
458:Anguilliformity
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507:branchial arch
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65:"Spiral valve"
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1408:more lists...
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1363:Fish families
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1348:Aquarium life
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1298:Cartilaginous
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935:Electric fish
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566:Mauthner cell
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485:Chromatophore
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268:Sharks portal
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67: –
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62:
61:Find sources:
55:
51:
45:
44:
39:This article
37:
33:
28:
27:
22:
1518:Fish anatomy
1473:expanding it
1462:
1437:
1425:
1325:spiny-finned
1274:Major groups
995:Intelligence
975:Scale eaters
920:Cleaner fish
802:Mouthbrooder
754:Reproduction
729:Schreckstoff
714:Lateral line
630:Swim bladder
620:Spiral valve
619:
549:hyomandibula
532:pseudobranch
415:Hypoxia in -
300:
295:
249:
241:regurgitated
226:
206:scroll valve
203:
188:(gars), and
150:scroll valve
149:
146:spiral valve
145:
143:
137:
112:
103:
93:
86:
79:
72:
60:
48:Please help
43:verification
40:
1528:Shark stubs
1439:WikiProject
1398:Prehistoric
1382:Threatened
1073:Other types
970:Sardine run
945:Forage fish
925:Corallivory
777:Development
762:Bubble nest
635:physoclisti
625:Suckermouth
598:Root effect
420:Ichthyology
200:Description
134:nurse shark
106:August 2018
1512:Categories
1054:Groundfish
1049:Freshwater
1044:Euryhaline
1029:Coral reef
965:Salmon run
955:Paedophagy
857:Amphibious
844:Locomotion
652:pharyngeal
640:physostome
593:Photophore
539:Glossohyal
512:gill raker
495:dorsal fin
445:physiology
287:References
224:and vent.
210:digestible
190:lungfishes
170:paddlefish
76:newspapers
1303:chimaeras
1190:Predatory
1167:Salmonids
1125:Whitefish
1115:Poisonous
1090:Diversity
1024:Coldwater
960:Predatory
950:Migratory
910:Bait ball
893:behaviour
812:Pregnancy
807:Polyandry
581:papillare
576:Operculum
571:Meristics
517:gill slit
480:Cleithrum
410:Fish kill
400:Fear of -
393:- as food
383:Fisheries
368:Evolution
358:Diversity
154:intestine
1427:Category
1378:Smallest
1291:lampreys
1254:flatfish
1244:Demersal
1200:mackerel
1195:billfish
1135:Commerce
1064:Tropical
1039:Demersal
1034:Deep-sea
990:Venomous
882:RoboTuna
832:triggers
827:Spawning
787:Juvenile
772:Egg case
405:FishBase
254:See also
166:sturgeon
156:of some
1373:Largest
1286:hagfish
1281:Jawless
1259:pollock
1232:sardine
1227:herring
1222:anchovy
1172:Tilapia
1162:Octopus
1157:Catfish
1144:Farming
1059:Pelagic
1019:Coastal
1006:habitat
862:Walking
767:Clasper
719:Otolith
681:systems
679:Sensory
613:ganoine
588:Papilla
439:Anatomy
378:Fishing
301:Biology
237:stomach
182:bichirs
90:scholar
1523:Sharks
1391:sharks
1308:sharks
1237:sprats
1217:Forage
1205:salmon
1085:Coarse
867:Flying
739:Vision
694:Barbel
608:Scales
468:dermal
348:About
222:cloaca
178:skates
158:sharks
92:
85:
78:
71:
63:
1465:shark
1463:This
1353:Blind
1341:Lists
1120:Rough
985:Sleep
891:Other
657:shark
647:Teeth
233:bones
229:lumen
218:colon
194:ileum
97:JSTOR
83:books
1469:stub
1386:rays
1320:Bony
1313:rays
1210:tuna
1152:Carp
1110:Oily
1095:Game
1080:Bait
1014:Cave
797:Milt
502:Gill
490:Fins
463:Bone
350:fish
341:Fish
214:fish
174:rays
168:and
69:news
1249:cod
1004:By
817:Roe
544:Jaw
442:and
172:),
148:or
52:by
1514::
247:.
184:,
180:,
176:,
160:,
144:A
140:).
1500:e
1493:t
1486:v
1475:.
333:e
326:t
319:v
164:(
136:(
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113:(
108:)
104:(
94:·
87:·
80:·
73:·
46:.
23:.
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