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5.1 Animal Science Vocab

Juncture of the esophagus and stomach that prevents food from moving back into the esophagus.
Long folded tube attached to the lower end of the stomach.
High fiber feed. Ex. pasture, hay, silage.
The terminal or lower part of the intestine, which ends at the anus.
The process of chewing food.
Enlarged vent in chickens used to excrete waste and lay eggs.
The digestive tract from the mouth to the anus.
Refers to birds; the class Aves.
Constructive process by which simple substances are converted by living cells into compounds that are more complex.
The true stomach of birds, which is a spindle-shaped organ between the esophagus and gizzard.
The posterior opening of the digestive tract.
Gullet; the tube that connects the throat or pharynx with the stomach. It varies greatly in the vertebrates; e.g., in the crop of a bird, it is distended for retention of food.
The passage of digested food from the alimentary canal to the circulatory system.
The third and lowest division of the small intestine, extending from the jejunum to the cecum.
“Blind gut” where small and large intestine join. Performs little function except in the horse where it assists with the digestion of roughages through bacterial action.
In humans and certain other vertebrate animals, a large saclike organ into which food passes from the esophagus or gullet for storage while undergoing the early stages of digestions.
Largest part of the ruminant stomach; a large amount of bacterial fermentation of feed materials occurs in the rumen.
Harvested forage, such as hay and grain, for livestock; To furnish with essential nutrients.
The true stomach of a ruminant animal, majority of the digestion occurs here.
The method or way food is delivered to the mouth.
The passage in an animal’s body though which food passes from mouth to anus.
Microscopic, hair-like extensions or projections of the inner lining of the digestive tract.
An organic catalyst; a large protein molecule produced by the body that stimulates or speeds up various chemical reactions without being used up itself.
Grain and protein supplements, ex. corn
Craw; a saclike enlargement in the esophagus of many birds to store food.
The opening through which an animal or human takes in food.
The breaking down of food into simple substances that are more readily available to the body to use.
Simple stomached animals. Ex. Pigs, dogs and horses.
The part of the small intestine between the duodenum and the ileum.
The opening of the cloaca; the anus of a bird.
An organ of digestion in which water is reabsorbed.
The chemical changes that take place in the living plant and animal cells whereby one compound is converted to one or more other compounds.
Animal with a four-chambered stomach, consumes large quantities of roughages.
Regurgitated food that has been chewed and is ready to be swallowed; a cud.
The third compartment of the ruminant stomach. Contains a mass of suspended, parallel, rough-surfaced leaves that grind ingesta to a fine consistency.
Hind or rear.
The partly digested material passed from the stomach into the duodenum.
The esophagus.
Yellowish green alkaline bitter liquid. Stored in gall bladder. Aids in the digestion of fatty acids.
A small wad of regurgitated feed in a ruminant’s mouth, which is rechewed and swallowed.