Hepatic caecum

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Hepatic caecum or hepatic cecum is a name used in describing various physiological structures in some crustaceans, insects and lancelets. "Hepatic" refers to the

lancelets
, whose "proto-liver" is homologous).

Amphioxus

A

amphioxus, or lancelet.[1][2] The hepatic caecum of the amphioxus is a presumed homologue of the vertebrate liver,[3][2] although it is not undisputed.[4] This homology was first hypothesized by Müller in 1844.[3]

Crustaceans

The hepatic caecum is a name given to various digestive structures found in certain crustaceans.[5]

Insects

In some insects, such as the grasshopper, several pairs of hepatic caeca secrete enzymes into the stomach where they assist in the digestive process.[6]

References

  1. ^ Waggoner, Ben (February 7, 1996). "Introduction to the Cephalochordata". University of California Museum of Paleontology. Retrieved January 20, 2014.
  2. ^ a b Fox, Richard (July 5, 2006). "Amphioxus". Lander University. Retrieved January 20, 2014.
  3. ^
    doi:10.18388/abp.2008_3197
    . Retrieved January 20, 2014.
  4. ISBN 0-03-910284-X
    .
  5. ^ "Hepatic cecum". Natural History Museum of Los Angeles County. Retrieved January 20, 2014.
  6. ISBN 978-81-219-2293-7
    .
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