Flashcards
Comparative GI anatomy
Flashcards do conjunto (39)
- 1Describe the omentum in the horse and pigDoesn't extend back to cover intestinal mass
Superficial + deep layers w mental bursa between
Epiploic foramen (SI prone to herniation through) - 2Which animals are more likely to develop peritonitis ? why ?Horse v susceptible - poorly developed omentum
Ruminants v resistant - highly developed omentum - 3Describe the attachments of the omentum of ruminantsSuperficial wall attaches to rumen on the left, passes ventral to rumen + attaches to descending duodenum on right
Deep wall attaches to rumen on right - passes ventral to spiral colon / jejunum and attaches to descending duodenum on right - 4Describe the spaces between the omentum in ruminantsSpace between superficial + deep layers = omental bursa
Space between deep layer + colon /jejunum = supraomental recess - 5Describe the position of the pig liverStraight
Rounded border facing dorsally
Right lobe on right, left lobe on left - 6Describe the position of the horse liverOblique
Rounded border faces dorsally and to the left
Right lobe more dorsal
Left lobe more ventral - 7Describe the position of the ruminant liver90 degree angle
Rounded border faces left
Right lobe dorsal
Left lobe ventral
Displaced to right due to rumen occupying left - 8What is the renal impression ? Do all species have it ?Caudate process of the liver has a right renal impression (where kidney sit)
Pigs DONT have a Rena impression as kidneys don't contact liver - 9Describe the lobes of a ruminant liver4 lobes (Left, Quadrate, Right, Caudate)
Caudate - largest in Ox
Papillary lobe -largest in sheep - 10Describe the lobes of a dog/cat/pig liver4 lobes (Left, Quadrate, Right, Caudate)
Left + right lobes are split to medial + lateral parts
Caudate lobe has 2 parts - caudate + papillary processes - 11Describe the liver and gall bladder of a horseNo papillary lobe
No gall bladder - 12Describe the shape of a horse spleenComma shaped
- 13Describe the shape of an OX spleenTongue shaped
- 14Describe the spleen of a sheepElongated + bright red
- 15Describe the shape of a dog liverHockey stick shaped
- 16Do sheep and goats have pancreatic and accessory ducts?Pancreatic duct is present
Accessory duct is not present - 17Do Ox/Pigs have pancreatic and accessory ducts?Accessory duct is present
Pancreatic duct is not present - 18How does the pancreas of a horse/pig differ from other speciesPancreas surrounds portal vein = annulus pancreatis
- 19Describe the stomach of a pigGastric diverticulum (extension of fundus)
Large cardiac gland region
Prominence of lymphatic tissue gastric mucosa
Torus pyloricus - 20Describe the stomach of the horseSaccus caecus (enlargement of fundus)
Margo plicatus
Cardiac loop (strong sphincter)
Well developed pyloric sphincter - 21Describe the stomach of ruminantsAdapted for fermentation
Rumen + reticulum = fermentation chamber
Omasum has nasal laminae - inc SA
2 stage pump transferring ingest from rumino-reticulum into abomasum
Torus pyloricus - 22Describe the structure of the duodenumSigmoid/cranial flexure
Descending duodenum
Caudal flexure
Ascending duodenum
Duodenojejual flexure - 23How is the jejunum different in pigsIn pig - LI pushes SI to right
- 24How is the ileum different in horsesIleum thickened - acts as a valve
- 25Describe the caecum and ascending colon of the pigCaecum is left compared to other species
Colon = spiral loop
Centripetal (inside) coils haustrated w taenia
Centrifugal (outside) coils smooth - concealed w/n centripetal - 26Describe the caecum and colon of the horseColon modified for fermentation
Right ventral, sternal flexure, left ventral, pelvic flexure, left dorsal, diaphragmatic flexure, right dorsal, transverse, descending (small colon)
Large comma shaped caecum
Haustrated w taenial bands - 27Why do animals have haustration + Taenia?Aids mixing + propulsion
- 28Describe the number of taenial bands of the horse GI tractCaecum = 4
RVC = 4
LVC = 4
LDC = 1
RDC = 3
Transverse = 2
Small colon = 2 - 29Describe the differences of a horse GI blood supplyCaecum: Lateral + medial caecal vessels
Ventral colon: colic branch of ileocolic
Dorsal colon : right colic
Horse has NO anti-mesenteric ileal blood supply - 30Describe the differences of a pig GI blood supplyLeft gastric artery = branch of splenic
Centripetal coils: colic brand of ileocolic
Centrifugal coils: right colic - 31Describe the differences of a ruminant GI blood supplyOmasum / Lesser curvature of abomasum: L+R gastric
Ruminoreticulum /Greater curvature of abomasum: L+R gastroepiploic + short gastric branches of splenic
Centripetal coils: colic branch of ileocolic
Centrifugal coils: right colic - 32Describe what organs you can access from the left side of the ruminantRuminoreticulum
- 33Describe what organs you can access from the right side of the ruminantColon
Jejunam
Omasum/Abomasum
Liver - 34Describe what anatomy you can access from the left side of the pigCaecum
Colon - 35Describe what anatomy you can access from the right side of the pigJejunum
- 36Describe what organs you can access from the left side of the horseJejunum
Small colon
Left colon - 37Describe what anatomy you can access from the right side of the horseCaecum
Right colon
Most of liver - 38Describe the position of organs that can be felt during the rectal exam of a horseLeft dorsal: jejunum + small colon
Left ventral: pelvic flexure
Right dorsal: base of caecum
Right ventral: body of caecum - 39Describe what anatomy you can feel during the rectal exam of a ruminantReprotract
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- Vet Med 2 (NSF) FlashCards sobre Comparative GI anatomy , criado por Alice Butterworth em 21-02-2019.
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- Alice Butterworth
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