CHAPTER 7: Galloper\'s Gut 93 270 Key Stomach Small intestine Cecum Large intest
ID: 262713 • Letter: C
Question
CHAPTER 7: Galloper's Gut 93 270 Key Stomach Small intestine Cecum Large intestine 240 210 180 150 120 90 60 30 Horse Cow Figure 7.3 Relative capacities of the digestive tracts in horses and cows. (Adapted from Ensminger and Olentine, 1978) c. How do you think the relative capacities of the stomach, small intestine, and large intes- tine would differ in humans as compared to horses and cows? 2. Where are the microbes (mostly facultatively anaerobic) involved in digestion primarnly located in the cow, horse, and human? 3. Compare the function of the stomach in the cow, horse, and human. Also, comment on the ability of each organism to digest cellulose in the stomach. 4. The function and structure of the digestive tracts of the cow, horse, and human fit the diets of these animals. The grazers eat primarily lealy vegetation. Omnivores, howe consume more calories from plant storage structures (grains, tubers, and roots) than fromExplanation / Answer
Answer C. The relative capacity of human stomach will be more than horses and less than cows. No regurgitation of food occurs in human beings, stomach has 3 parts in us, 2in horses and 4 in cows.
Relative capacity of small intestine will be approximately similar in human beings, horse and cow.
Relative capacity of caecum in human beings will be less than horses but more than the cows as, caecum of horse helps in fermenting food.
Relative capacity of large intestine will be more in horses than human beings. Colon part of the large intestine in horses is approximately 35 feet long meant for fermentation of food.
Answer 2. In cows they are basically restricted to the stomach. E. coli in human beings is an important facultative anaerobe found in the large intestine. However, in horses they are restricted to the colon which is a part of large intestine only.
E. coli are maximum in horses then cows and lowest in human beings.
Answer 3. Amongst all the stomach in cow is divided is more complex and divided into 4 parts rumen, reticulum, omasum and abobasum and is meant to digest the cellulose. Regurgitation occurs in cows in humans it is absent.
Horse stomach is divide into just 2 parts namely, glandular and the non glandular separated by margo plicatus. Cellulose digestion occurs in horses however they lack in having the gall bladder. Bile duct leads into the duodenum.
Stomach in human beings is simple and divided into the cardiac, fundi and the pyrolic part. No cellulose digestion occurs because enzyme for its digestion are absent.
Answer 4. In omnivores like human beings enzymes helps in the digestion of carbohydrates, proteins and Fats. Partial digestion of food takes place in the stomach which is divided into the 3 parts. Small intestine and large intestine in us is curved to increase the surface area of the absorption and helps in full digestion of the food.
In herbivores like horse and cow, as they can digest cellulose have fermentation compartments in their alimentary canal. Horse has caecum and colon as the fermentation chamber, it is 35 feet long for completing digestion and fermentation process effectively.
Cow has a big chamber as stomach for fermentation, it quite big in size in comparison to the human beings and horses. Regurgitation also occurs to mouth as fermentation gets completed in 4 hours or so. Cellulose digesting enzymes are present in herbivores.