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ANS 3440 Digestive Tract
comparative physiology of various digestive tracts
34
Agriculture
Undergraduate 3
01/26/2014

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Term
Storage, preparing food for absorption, absorption, reject undigested residue, and fermentation are all functions of what?
Definition
Digestive Tract
Term
GI is small, less volume, minimal compartmentalized, fast rate of passage, and brief storage time in what species of animal?
Definition
Carnivores
Term
GI is larger, more volume, stomach or hindgut is compartmentalized, rate of passage is slow, and greater storage time is in what species of animal?
Definition
Herbivores
Term
What species of animals have great variation in digestive tracts?
Definition
Omnivores
Term
Prehension, masitication, deglutition (swallowing), and regurgitation are fucntions of what?
Definition
The mouth
Term
What are the 3 paired slivary glands?
Definition
Parotid, Sublingual, and Submaxillary
Term
What is a muscular tube connecting the mouth to the stomach?
Definition
Esophagus
Term
Storage, mixing, empties at a controlled rate, chemical and enzymatic dig, and bacteriostat are all functions of what?
Definition
Stomach
Term
Parietal cells produce HCL and Cheif or peptic cells produce pepsinogen which are glands in the body region of what?
Definition
Stomach
Term
The secretion of parietal cells and peptic cells mix with what?
Definition
Mucus
Term
In gastric secretion smell, taste, thought of food, gastrin, acetylcholine, histamine, and protein are what?
Definition
Stimulus
Term
In gastric secertion acid, antihistamine, CCK, fat, OTC products, and osmotic pressure are what?
Definition
Inhibitors
Term
What are the 4 distinct compartments of the ruminant stomach?
Definition
Reticulum, Rumen, Omasum, and Abomasum
Term
What allows ruminants to consume low quality, fibrous feeds and allows ruminants to be less dependent on diet to meet nutritional needs than non ruminants?
Definition
Cellulose Digestion
Term
What is responsible for the cellulose digestion that occurs?
Definition
Microbial population
Term
Microbial population consists of what?
Definition
Bacteria, Protozoa, and Yeast
Term
What happens to the microbes that inhabit the rumen?
Definition
Lunch for host
Term
Frequent food intake, constant temperature, constant pH, removal of end products, similar osmotic pressure to blood, and dynamic environment are conditions in the rumen that is maintained to support what 2 things?
Definition
Microbes and Constant fermentation
Term
What are the 3 unique attributes to the rumen stomach?
Definition
Esophageal or reticular groove, Rumination, and Eructation
Term
What is the long tube for digestion and absorption of nutrients that is also the main site of enzymatic digestion and absorption of food?
Definition
Small Intestine
Term
In the SI what receives secretions from the pancreas, gall bladder, and intestinal wall?
Definition
Duodenum
Term
In the SI what is the main site of digestion?
Definition
Jejunum
Term
In the SI what is the main site for absorption?
Definition
Ileum
Term
What are the 4 enhancements for absorption in the SI?
Definition
Length, Folds, Villi, and Microvilli
Term
What is the main movement of the SI?
Definition
Segmentation
Term
What is known as the blind gut that is important to horse and rabbits?
Definition
Cecum
Term
The main function is to absorb water and electrolytes, also is the site of storage of feces until it it expelled is known as what?
Definition
Large Intestine
Term
What part of the GI has an opening controlled by a sphincter?
Definition
Rectum and anus
Term
The bird has 3 part compartmentalized stomach. What are they?
Definition
Crop, Proventriculus, and Gizzard
Term
Pancreatic secretion is stimulated by what 2 things?
Definition
Nerves and Acid stimulated hormones
Term
Pancreatic secretions contain what 3 things?
Definition
Enzymes (proteases, amylases, lipases), Bicarbonate, and Insulin and Glucagon
Term
Endocrine pancreatic functions are insulin and glucagon, exocrine are what?
Definition
Enzymes and Bicarbonate
Term
The liver constantly secretes bile and bile acids are synthesized from what that helps digest fat?
Definition
Cholesterol
Term
What are the 2 type of gallstones
Definition
Pigment stones and Cholesterol stones (most common)
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