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Biology 2 - C04 - 07

🧬📗1️⃣ Module 4 - Digestive System Variations - SET 7

QuestionAnswer
What is a monogastric digestive system? A system with a single-chambered stomach.
Give an example of a monogastric animal. Humans, pigs, dogs, and cats.
Where does most digestion occur in monogastric animals? In the stomach and small intestine.
What is a ruminant digestive system? A system with a multi-chambered stomach specialized for fermentation.
Name the four chambers of a ruminant stomach. Rumen, reticulum, omasum, abomasum.
What happens in the rumen? Microbial fermentation of plant material.
What is cud? Partially digested food that is regurgitated and re-chewed.
What happens in the reticulum? Further fermentation and formation of cud.
What happens in the omasum? Absorption of water and electrolytes.
What happens in the abomasum? True stomach digestion using gastric juices and enzymes.
Give an example of a ruminant animal. Cattle, sheep, goats, deer.
What is a nonruminant herbivore? An herbivore with a single stomach but significant hindgut fermentation.
Where does fermentation occur in nonruminants? In the cecum and colon.
Give an example of a nonruminant herbivore. Horses and rabbits.
What is hindgut fermentation? Microbial breakdown of plant fibers in the cecum and colon.
Why do horses rely on hindgut fermentation? They lack a multi-chambered stomach but still digest cellulose.
What is the cecum? A pouch where microbial fermentation occurs in nonruminants.
What is a key advantage of ruminant digestion? Efficient breakdown of cellulose before reaching the intestines.
What is a key disadvantage of hindgut fermentation? Less efficient nutrient extraction compared to ruminants.
Which digestive system do birds have? A modified monogastric system with a crop and gizzard.
Created by: francisslavin002
 

 



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