Classification of digestive systems

Question 1

8 parts of the digestive tract

Answer 1

1. mouth
2. esophagus
3. stomach
4. small intestine
5. cecum
6. large intestine
7. rectum
8. anus

Question 2

Classifications of the digestive tract by anatomy of the stomach

Answer 2

1. ruminant - complex stomach
2. monogastric - simple stomach (single chamber)

Question 3

Classifications of digestive systems by diet

Answer 3

1. carnivore
2. omnivore
3. herbivore

Question 4

It is impossible to have this anatomy/diet combination

Answer 4

ruminant carnivore

Question 5

This organ system has a greater degree of functional diversity than any other organ in the body

Answer 5

the digestive system

Question 6

A large, complex stomach/cecum tells you an animal is…

Answer 6

an herbivore (ruminants have a complex stomach, nonruminant herbivores have the biggest cecums but not a complicated stomach)

Question 7

A simple digestive tract most likely belongs to a…

Answer 7

monogastric carnivore

Question 8

Why does a horse (monogastric herbivore) need high quality hay (high CP) but a cow (ruminant) can eat low quality hay and still survive?

Answer 8

for cows, the site of digestion (the stomach) occurs before the site of absorption (the small intestine)

for horses, the site of digestion (the colon) occurs before the major site of absorption (the small intestine)

Thus, horses require more nutrient rich food because they are less efficient at absorbing nutrients from their food than cattle