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Learn about how different animals digest their foods and the organs of their digestive systems. All animals need nutrients from their environment. Nutrients provide energy and materials to build new cells and tissues. Nutrients include proteins, carbohydrates and sugars, vitamins, minerals and fats. Different types of animals have different ...
Function of the Digestive System in Animals. The primary functions of the GI tract include prehension of food and water; mastication, salivation, and swallowing of food; digestion of food and absorption of nutrients; maintenance of fluid and electrolyte balance; and evacuation of waste products. These functions can be broadly characterized as ...
- Alex Gallagher
Very little digestion occurs in the mouth in farm animals. The small intestine is the site of carbohydrate digestion in monogastrics. Pancreatic amylase acts on alpha 1,4 links, and other disaccharidases and remove disaccharide units. The end product (mainly glucose) diffuses into the brush-border using ATP-dependent glucose transporters.
- Gita Cherian
- 2019
Boundless. 34.1: Digestive Systems - Introduction. Animals use the organs of their digestive systems to extract important nutrients from food they consume, which can later be absorbed. 34.2: Digestive Systems - Herbivores, Omnivores, and Carnivores. Animals can be carnivores, herbivores, or omnivores in their eating strategies.
1. Figure 34.3.1 34.3. 1: Digestion of carbohydrates is performed by several enzymes. Starch and glycogen are broken down into glucose by amylase and maltase. Sucrose (table sugar) and lactose (milk sugar) are broken down by sucrase and lactase, respectively.
During digestion, food particles are broken down to smaller components, and later, they are absorbed by the body. 34.0: Prelude to Animal Nutrition and the Digestive System. One of the challenges in human nutrition is maintaining a balance between food intake, storage, and energy expenditure. Imbalances can have serious health consequences.
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A large part of digestion occurs in the stomach, shown in Figure 15.11. The stomach is a saclike organ that secretes gastric digestive juices. The pH in the stomach is between 1.5 and 2.5. This highly acidic environment is required for the chemical breakdown of food and the extraction of nutrients.
