Digestive Tracts Flashcards
Name the four stages of food processing in the digestive tract
ingestion - digestion - absorption - elimination
Whats the sequence of digestive processes in the ruminant is;
- microbial
- host enzymes and acid
- microbial
What does the pancreas secrete?
bicarbonate
The reticular (oesophageal) groove allows:
Milk to bypass the retoculo-rumen
Dental adaptations of herbivores DO NOT include
Upper incisors
Compared to post-gastric fermentation, pre-gastric fermentation tends to be:
able to utilise non-protein nitrogen sources such as urea
Carnivores and omnivores tend to have gastric epithelium at the start of, or throughout the:
Stomach
Name the enzyme that is used to digest cellulose
Cellulases
The parts of the stomach, identified by position and the type of glands present are the
cardia, fundus, body, antrum and pylorus
The major organ involved in cellulase digestion in the rabbit and horse is the
Caecum
The liver secretes emulsifiers, _______ and _______ into the digestive tract via the bile duct
enzymes and buffers
The leaf-like structures in the omasum which provide a very large surface area for
absorption of volatile fatty acids and water are named
Laminae
The glands/organs of the digestive tract, other than the secretory epithelium, that secrete
fluids into the tract are salivary glands, pancreas
Liver, gallbladder
The major product of carbohydrate digestion in the monogastric animal is
Glucose
The products of carbohydrate digestion in the ruminant animal are the volatile fatty acids
acetate
beta-hydroxybutyrate and propionate
Digestion of protein the small intestine produces
Amino acids
Monogastric digestive tracts DO NOT include
abomasum
The secretory gastric epithelium of the stomach secretes
acids, mucus and enzymes
Fluids are added to the digestive tract by (name 3)
Salivary glands Pancreas Liver
Gallbladder
Cellulose is digested by enzymes named ______ secreted by symbiotic ________
Cellulase micro-organisms
The non-ruminant herbivore has a _______ stomach and a large _________
Simple. Caecum
