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Krist Hausken

Why rats can't vomit - 1 views

    • Krist Hausken
       
      Rats + Humans: Crural sling, LES Rats + Pigeons: "Crop" or "Forestomach", same purpose
  • When the crural sling contracts it pinches the esophagus closed
  • Forestomach: thin-walled, non-glandular section that receives the esophagus and serves as a holding chamber for food
  • ...6 more annotations...
  • Corpus: thick-walled, glandular section. Its walls have secretory glands that produce digestive enzymes and mucus. Digestion begins in the corpus. The pyloric sphincter controls the movement of food from the corpus to the intestines (specifically, the duodenum).
  • Diagram of the rat's stomach. Adapted from Moore 2000
  • The forestomach and the corpus are separated by a low fold of tissue called the limiting ridge
  • At the esophagus, the course of the limiting ridge bends into a U-shape and almost surrounds the esophageal opening
  • The esophagus is closed off from the stomach by the gastroesophageal barrier, which consists of the crural sling, the lower esophageal sphincter, and the several centimeters of intraabdominal esophagus that lie between them
  • Humans also have a crural sling and an esophageal sphincter, but ours are placed right on top of one another
jadechalsey

Rat Anatomy Review for Biology 120 - 1 views

shared by jadechalsey on 20 Sep 10 - Cached
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    This has great pictures for rat dissections.
suwhitte

digestive physiology or rabbits and rodents - 1 views

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    Those dissecting the rat (a rodent) might find this helpful
jadechalsey

379 Rat Dissections - Jade Halsey - Picasa Web Albums - 0 views

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    These are the photos taken on 9-20-2010. The group: Anna, Krist, and myself.
jadechalsey

Rat Dissection - 2 views

  •  
    Some more good pictures.
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