Physiology Of Digestion Flashcards
What are the functions of the gastrointestinal system?
To receive and digest food so that nutritional requirements can be met.
To excrete waste products.
The process of digestion involves..
The movement of ingest along the gastrointestinal tract.. The mechanical breakdown of food.. Enzymatic breakdown of food. Absorption of nutrients. And excretion of waste.
What are the nutrients required by animals?
Water Protein Fats Carbs Minerals Vitamins
Waves of smooth muscle contractions moving ingest a along the gi tract is called
Peristalsis. Controlled by pacemakers throughout the gi tract. Distention of the intestine can also stimulate muscular contractions. This occurs even in a relatively empty gi tract.
Dogs have a small amount of amylase present in the…
Saliva. Which begins breakdown of starch in the mouth.
Pepsin begins the breakdown of proteins into..
Peptides which are further broken down into amino acids at the level of the brush border in the small intestine.
Fats (triglycerides) are emulsified in the stomach and broken down in the..
Small intestine by the action of pancreatic lipase. Bile acids acts as a detergent and emulsify the fats for digestion.
Carbohydrates are broken down into..
Monosaccharides by pancreatic and intestinal disarrcharides.
Absorption of nutrients begin..
From the duodenum onwards. The highest level of absorption tajes place in the duodenum and the jejunum. From jejunum to the rectum absorption decreases with mainly water and electrolytes being absorbed from the large intestine.
Defecation…
Is process by which animals excrete solid waste products from the colon and the rectum.
After birth the small intestine in neonates allows antibodies…
To pass through directly into the bloodstream. This results in transfer of immunity from the dam to the offspring via the maternally derived antibodies present in the colostrum. Essential part of immunity in dogs cats and ruminants.
