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The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion (the tongue, salivary glands, pancreas, liver, and gallbladder). ...
Digestion is the breakdown of large insoluble food compounds into small water-soluble components so that they can be absorbed into the blood plasma.In certain organisms, these smaller substances are absorbed through the small intestine into the blood stream.
Table of the different major digestive enzymes. Digestive enzymes are found throughout much of the gastrointestinal tract.In the human digestive system, the main sites of digestion are the mouth, stomach, and small intestine.
Extracellular phototropic digestion is a process in which saprobionts feed by secreting enzymes through the cell membrane onto the food. The enzymes catalyze the digestion of the food, i.e., diffusion, transport, osmotrophy or phagocytosis.
Most organisms that use intracellular digestion belong to Kingdom Protista, such as amoeba and paramecium.. Amoeba. Amoeba uses pseudopodia to capture food for nutrition in a process called phagocytosis.
A typical adult human stomach will secrete about 1.5 liters of gastric juice daily. [3] Gastric juice is the combination of gastric gland secretions including the main component of hydrochloric acid (gastric acid), gastric lipase and pepsinogen. [4]
In mammals, invertebrates and most fish, [1] [2] the anus (pl.: anuses or ani; from Latin, 'ring' or 'circle') is the external body orifice at the exit end of the digestive tract (), i.e. the opposite end from the mouth.
Gastrointestinal diseases (abbrev.GI diseases or GI illnesses) refer to diseases involving the gastrointestinal tract, namely the esophagus, stomach, small intestine, large intestine and rectum; and the accessory organs of digestion, the liver, gallbladder, and pancreas.