These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: [Morphology of the endocrine part of the pancreas of birds].
    Author: Iaglov VV.
    Journal: Arkh Anat Gistol Embriol; 1977; 72(1):24-7. PubMed ID: 326229.
    Abstract:
    Methods of light and electron microscopy were used to study the structural organization of the endocrinous part of the pancreas in birds (domestic ducks and chickens). It has been established that the endocrinous part is formed by three types of pancreatic islands: dark, light and mixed islands. "Dark" islands consist of A- and D-cells, "light" ones--of B and D-cells and "mixed" islands--of A-, B- and D-cells. The index of B/A-cell ratio is equal to 0,39--0,4. This shows that each B-cell corresponds to 4 A-cells. On this basis one can say that the counterinsular apparatus of birds became stronger in the process of evolution and due to this a comparatively high level of glycemia is sustained in them. Availability of "dark" and "light" pancreatic islands also points out that in birds there occurred a partial disconnection of insular and counterinsular components of the endocrinous part of the pancreas, necessary for adaptation to principally new conditions of the environment.
    [Abstract] [Full Text] [Related] [New Search]