The digestive system of the dog
The digestive system of the dog includes the various organs involved in digestion , from the mouth to the anus, as well as the digestive glands, such as the liver and pancreas
Food is ground in the mouth by the teeth, and soaked with saliva before being swallowed. The dog quickly swallows large enough pieces without chewing a lot.
Many salivary glands secrete saliva that acts by moistening and lubricating food.
The enzymes contained in saliva begin the phenomenon of digestion of some constituents of food. The bolus then passes into the pharynx, the crossroads of the respiratory and digestive tracts, then into the esophagus to the stomach.
The musculature of the esophagus allows food to move into its lumen, but has no role in digestion.
The dog's stomach is quite small, its capacity is of the order of one to two liters. But the stomach is a very dilatable organ. The dog can swallow large amounts of food, his stomach will expand and his belly will swell.
The glands of the stomach secrete extremely potent enzymes, as well as acids capable of digesting what the dog has swallowed. The musculature of the stomach helps digestion and the progression of food in the digestive tract to the small intestine
It measures about six times the length of the dog, more than three meters... This is in the small intestine discharged by the bile secreted by the liver and pancreatic juices.
Throughout its length, the small intestine is strewed with glands favoring digestion.
Digestion ends in the fat intestine, where feces are formed. In the large intestine are also synthesized many vitamins essential to the body.
The rectum ends the digestive tract. In this portion, the feces are stored until they are expelled.
Two glands on either side of the rectum, the anal glands, secrete a greasy and smelly product that serves to lubricate the passage of feces. The dog's liver is composed of four liver lobes. The functions of the liver are numerous and varied: synthesis of lipids, albumins, synthesis of urea, uric acid, synthesis of agents of blood coagulation. The liver serves as a reservoir for blood and vitamins; it is also the organ that destroys the toxins.
The liver cells secrete the bile that is stored in the gall bladder, before they flow into the small intestine. The bile is used mainly to digest fats.
The pancreas secretes pancreatic juice which allows the breakdown of food thanks to the many enzymes it contains.
The pancreas also secretes insulin and glucagon, hormones of the body. blood glucose control
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