Talk:Proventriculus

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Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 07:22, 17 January 2022 (UTC)

Proventriculus in Insect Terminology

The following statement on this Wikipedia page for the term "Proventriculus" seems to be incorrect on the entomological meaning of the term: "The [entry in Microsoft] Encarta (2007) holds that the proventriculus is the first part of a bird's stomach, where digestive enzymes are mixed with food before it goes to the gizzard. It is analogous to the gizzard in insects and crustaceans."

That's not the way the insect proventriculus is described in the blog entry "Crops and Gizzards" on the Purdue University website. There, the insect proventriculus is described as the analogue of the bird crop, as follows: "... Digestion begins in the crop, but most of the food in insects and birds is pushed through a narrow passage in the alimentary canal called the gizzard (proventriculus in insects). The gizzard is a grinding organ... Although the bird gizzard and insect proventriculus serve the same function, there is a difference. The insect proventriculus has a series of sharp chitinous teeth around a narrow opening through which the food is forced. The material is shredded in the process. The gizzard of a bird is a muscular organ that grinds the food. However, to make the gizzard work, the bird has to ingest particles of stone or grit that are stored in the organ..."

ScottS (talk) 17:34, 28 March 2021 (UTC)

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