Lecture 21 4/5/24 Flashcards
Which flexures are present in the bovine duodenum?
-sigmoid
-cranial duodenal
-caudal duodenal
What affect does the rumen have on the ascending duodenum?
-pushes the ascending duodenum to the right of midline
-ascending duodenum is still located to the left of the cranial mesenteric a.
Where is the majority of the jejunum located in the bovine?
within the supraomental recess
What are the characteristics of the ileum?
-attached to the cecum via ileocecal fold
-joins cecum at the ileal orifice
What are the divisions of the ascending colon in the bovine?
-proximal loop
-spiral loop
-distal loop
What is the function of the proximal loop of the ascending colon?
serves as part of the ileum, cecum, and colon junction
How does the spiral loop of the ascending colon coil in the bovine?
-begins centripetal
-turns spiral inward towards the central flexure
-after flexure, centrifugal turns spiral outward
Which duodenal flexure sits on top of the distal loop of the ascending colon?
caudal duodenal flexure
How does the transverse colon pass in the bovine?
cranial, towards the cranial mesenteric a.
What are the characteristics of the descending colon?
-runs caudally towards rectum and anus
-can feel fecal balls within lumen
Which lobes of the liver are present in the bovine?
-left
-right
-quadrate
-caudate
–contains papillary and caudate processes
How do the left and right lobes of the bovine liver appear?
stacked, with left lobe being ventral and right lobe being dorsal
What are the characteristics of bile excretion/storage in the bovine?
-gall bladder is present
-bile duct opens on major duodenal papilla
What are the characteristics of the bovine pancreas?
-only have accessory pancreatic duct
-accessory pancreatic duct opens on minor duodenal papilla
What are the characteristics of the GI tract in small ruminants?
-only have pancreatic duct
-gall bladder and bile duct both present
-lack minor duodenal papilla; both ducts open on the major
