Comparative Anatomy of Digestive Tract
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Questions and Answers

What is the primary reason for anatomical differences in the digestive tract between species?

  • Genetic variation between species
  • Brain size and complexity
  • Type of diet consumed (correct)
  • Evolutionary adaptation to environment

Which of the following digestive systems is characterized by a simple stomach?

  • Omnivore
  • Ruminant
  • Non-ruminant (correct)
  • Herbivore

What is the main function of the rumenoreticulum in ruminants?

  • Hormone regulation
  • Providing a suitable environment for microorganisms (correct)
  • Protein synthesis
  • Fat storage

What is the fate of propionic acid in the body?

<p>Converted to glucose by the liver (D)</p> Signup and view all the answers

What is the primary source of energy for horses and rabbits?

<p>Fermentation end-products (C)</p> Signup and view all the answers

What is the characteristic of the large intestine in horses and rabbits?

<p>Long and complex (C)</p> Signup and view all the answers

What is the role of the liver in the digestive system?

<p>To secrete bile acids, cholesterol, and other substances into the small intestine (B)</p> Signup and view all the answers

What is the purpose of segmentation movement in the intestine?

<p>To mix the ingesta and bring it into contact with villi (C)</p> Signup and view all the answers

What is the result of microbial fermentation in the large intestine?

<p>Production of VFA, CO, and CH4 (D)</p> Signup and view all the answers

What happens to the ammonia produced in the large intestine?

<p>It is absorbed into the bloodstream and converted to urea in the liver (D)</p> Signup and view all the answers

What is the role of the cecum and colon in the digestive system?

<p>To ferment and break down undigested carbohydrates (C)</p> Signup and view all the answers

What is the end product of tryptophan metabolism by microflora in the large intestine?

<p>Indole and skatole (D)</p> Signup and view all the answers

In which part of the digestive system does microbial fermentation occur in horses?

<p>Cecum and large colon (C)</p> Signup and view all the answers

What is the function of the cloaca in birds?

<p>Hold waste products until voided (B)</p> Signup and view all the answers

Which part of the digestive system is responsible for the accumulation of feces just prior to discharge?

<p>Rectum (D)</p> Signup and view all the answers

What is the characteristic of the teeth in ruminants?

<p>No incisor teeth on the upper jaw (B)</p> Signup and view all the answers

Where does fiber digestion occur in horses?

<p>Cecum and large colon (B)</p> Signup and view all the answers

What is the name of the terminal opening of the digestive tract in birds?

<p>Vent (B)</p> Signup and view all the answers

What is the primary site of microbial fermentation in ruminant animals?

<p>Reticulorumen (D)</p> Signup and view all the answers

Which of the following animals is an example of a hindgut fermenter?

<p>Horse (A)</p> Signup and view all the answers

What is the function of the esophageal groove in young ruminants?

<p>To allow milk to pass directly into the abomasum (D)</p> Signup and view all the answers

What is the main difference between monogastric and ruminant animals?

<p>Site of microbial fermentation (C)</p> Signup and view all the answers

Which of the following animals is an example of a monogastric, non-ruminant omnivore?

<p>Pig (A)</p> Signup and view all the answers

What is the name of the fourth chamber of the ruminant stomach?

<p>Abomasum (B)</p> Signup and view all the answers

What is the purpose of the rough inside of the cheeks and palate in ruminants?

<p>To hold feed in while chewing (A)</p> Signup and view all the answers

What is the unique function of the esophagus in ruminants?

<p>To allow for bidirectional flow (D)</p> Signup and view all the answers

What is the primary function of the rumen in ruminants?

<p>To house billions of microorganisms (C)</p> Signup and view all the answers

What is the risk of having a foreign object lodged in the reticulum?

<p>It can penetrate into the heart (A)</p> Signup and view all the answers

What is the term for the process of bringing food back from the stomach to the mouth for further chewing in ruminants?

<p>Rumination (A)</p> Signup and view all the answers

What is the characteristic motion of chewing in ruminants?

<p>Side-to-side motion (A)</p> Signup and view all the answers

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