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Types of nutrition - nutrition
Autotrophic nutrition is known as that used by autotrophic organisms, which are organisms that produce their own food, synthesizing the essential substances they need for their metabolism from inorganic substances, such as carbon dioxide.
There are different types of autotrophs, for example, the so-called chemolithotrophs, which are bacteria that use the oxidation of inorganic compounds for energy production, such as sulfur dioxide or ferrous compounds. There are also photolithoautotrophs, which are organisms that use photosynthesis, such as plants.
Heterotrophic nutrition is the nutrition of heterotrophic organisms, which are beings that need others to live, i.e. they feed on organic substances that are synthesized by other organisms.
Examples of heterotrophic nutrition are found in fungi, animals and a multitude of bacteria and protozoa or protozoa, which manufacture complex organic molecules by taking advantage of the energy of the autotrophic organisms they have eaten.
There are different types of heterotrophic beings, which, according to their nutrition, can be divided into four classes, holotrophic [food chain, carnivorous, herbivorous or phytophagous, and omnivorous], saprophagous [they feed on dead], symbiotic and parasitic.
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The nutritional pyramid or food pyramid is a way of graphically representing how a balanced diet should be constituted.
The nutritional pyramid is divided into four parts with the base of the pyramid being cereals and tubers, at the next level are fruits and vegetables, then animal foods and legumes, and finally, at the apex of the pyramid, are sugars and fats.
There are different ways of ingesting food, in addition to the natural way, which is by the oral route, especially in the case of patients with special dietary or nutritional needs.
Enteral and parental:
