Search results
Results From The WOW.Com Content Network
This work has been released into the public domain by its author, LadyofHats.This applies worldwide. In some countries this may not be legally possible; if so: LadyofHats grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion (the tongue, salivary glands, pancreas, liver, and gallbladder). ...
The liver is a major metabolic organ exclusively found in vertebrate animals, which performs many essential biological functions such as detoxification of the organism, and the synthesis of proteins and various other biochemicals necessary for digestion and growth.
Indigestion, also known as dyspepsia or upset stomach, is a condition of impaired digestion. [2] Symptoms may include upper abdominal fullness, heartburn, nausea, belching, or upper abdominal pain. [3]
Layers of the Alimentary Canal.The wall of the alimentary canal has four basic tissue layers: the mucosa, submucosa, muscularis, and serosa. The enteric nervous system in humans consists of some 500 million neurons [11] (including the various types of Dogiel cells), [1] [12] 0.5% of the number of neurons in the brain, five times as many as the one hundred million neurons in the human spinal ...
An insect uses its digestive system to extract nutrients and other substances from the food it consumes. [3]Most of this food is ingested in the form of macromolecules and other complex substances (such as proteins, polysaccharides, fats, and nucleic acids) which must be broken down by catabolic reactions into smaller molecules (i.e. amino acids, simple sugars, etc.) before being used by cells ...