Update the histological description of the dorsal vessel #1337
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Update the definition of 'cardial cell' to remove the notion of contractility, since the term is used to refer to all cells that form the wall of the dorsal vessel, including the cells that form the ostia and the intracardial valves. Add an adult-specific 'adult cardial cell' term, on par with the existing 'embryonic/larval cardial cell'. Add cell numbers as provided by Lehmacher et al. (2012) [FBrf0219200].
Add 'contractile cardiommyocyte' as a subclass of 'cardiomyocyte' to refer to the largest fraction of cardiomyocytes, those whose function is to propel the hemolymph through the dorsal vessel. Re-classify the existing 'adult heart circular muscle cell' and 'larval heart circular muscle cell' as subclasses of 'contractile cardiomyocyte'.
Add 'ostial cell' as a subclass of 'cardial cell', along with stage-specific subclasses.
Add 'intracardial valve cell' as a subclass of 'cardial cell', along with stage-specific subclasses.
Update the definition for the larval heart to remove the mention of 3 chambers (not found in recent descriptions). Update the definition of 'adult ostium' to mention that there are 5 pairs of ostium in the adult heart, not 4 (the first chamber contains 2 pairs). Update 'ostiolar valve' to indicate that the cells making up these structures are the newly added 'ostial cells'.
Add a new term to represent the intracardial valves formed by the intracardial valve cells.
Provide a bit more detail about the arrangement of cardiomyocytes in the dorsal vessel.
Clare72
requested changes
Dec 8, 2021
Always precise the scope in which the given numbers are valid.
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We should also probably merge However I am unsure about what to do with the |
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I would not do this merge as part of this PR as it will probably require a bit of extra research (and informing the curators), which can be done as part of #1138 |
Clare72
requested changes
Dec 9, 2021
Rephrase so that the definition does not exclude anything not listed. Also remove the association with a longitudinal layer. Re-classify 'adult contractile cardiomyocyte' as an 'adult circular muscle cell' under that new definition.
Clare72
reviewed
Dec 9, 2021
Make sure ostiolar valves are 'part of' the dorsal vessel and that ostial cells are 'part of' ostiolar valves.
The correct adjective for 'ostium' is 'ostial'. 'Ostiolar' is the adjective for 'ostiole', which is a different term that seems more used for plants than for animals.
Clare72
approved these changes
Dec 9, 2021
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This PR uses recent anatomical and histological studies (notably Lehmacher et al., 2012 [FBrf0219200]) to give more precise descriptions of the cell types that make up the dorsal vessel in both the larva and the adult.
closes #1289
closes #17