What does midgut mean?
The midgut is the central section of an animal's alimentary canal, positioned between the foregut and the hindgut. Its exact form and function vary among animal groups. In insects, the midgut is the main site where food is digested and nutrients are absorbed; its epithelial cells may also produce digestive enzymes and protective substances. The term also has an important embryological meaning in vertebrates, describing the middle portion of the embryonic gut that develops into the small intestine. Because it refers to an anatomical region rather than an entire digestive organ, the midgut is usually discussed in relation to the foregut and hindgut. The word is most likely to be encountered in biological research, entomology textbooks, comparative anatomy, and descriptions of insect digestive systems. It is not normally used in general conversation, though its straightforward formation from “mid” and “gut” makes its central anatomical position readily understandable.
nounThe central portion of an animal's alimentary canal, situated between the foregut and hindgut. In insects it is the principal site of digestion and nutrient absorption, while in vertebrate embryology it gives rise to the small intestine.
- The central region of an animal's alimentary canal, especially the portion of an insect's digestive tract where digestion and nutrient absorption primarily occur.
- The middle part of the embryonic alimentary canal of vertebrates, which develops into the small intestine.
"Most of the digested nutrients are absorbed through the wall of the insect's midgut."
"The toxic compound was rapidly broken down in the insect midgut."
"During embryonic development, the midgut forms the central portion of the intestine."
The plural is used when referring to the digestive regions of multiple animals.
"The larvae of both species have enlarged midguts adapted for processing plant material."
The midgut is an insect's digestive power centre, handling much of the digestion and absorption that keeps the animal running.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does midgut come from?
“Midgut” is a compound formed within English from “mid,” meaning middle, and “gut,” the alimentary canal. The word developed as a descriptive anatomical term for the central part of the digestive tract, paralleling the older terms “foregut” and “hindgut.” The form “mesenteron” is also used in some zoological contexts as a synonym or more formal equivalent.
How midgut is actually used
This is chiefly a technical term in zoology, entomology, and embryology. It should not be confused with the similar-sounding word 'midgutted,' which is not standard usage.
Easily confused with midgut
The foregut is the anterior portion of the alimentary canal, whereas the midgut is the central region between the foregut and hindgut.
The hindgut is the posterior portion of the alimentary canal, while the midgut lies between it and the foregut.