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General Information
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| Term |
tracheal pit |
ID (Ontology) |
FBbt:00005036 (Fly Anatomy) |
| Definition |
Deep and narrow pit formed by the invagination of a tracheal placode in a late extended germ band embryo. Invagination of the placode begins during stage 11. Branches begin to bud from the pit during stage 11, with a dorsal and ventral stem being apparent by mid-stage 12. The pit closes over during stage 13. There are 10 pairs of tracheal pits - one pair in each tracheal metamere (each segment from T2 to A8). Pits are located in the central one third of each parasegment, with the most anterior in parasegment 4 and the most posterior in parasegment 14.[ FlyBase:FBrf0064787 FlyBase:FBrf0089570 ] |
| Also Known As |
"embryonic tracheal pit" ; "tracheal sac" |
| Comment |
Note, some authors refer to tracheal pits as tracheal sacs. This ontology avoids this nomenclature in order to avoid confusion with terms referring to the tracheal air sacs of the adult. |
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Links to Extrernal Ontologies
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Annotations
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Records annotated with this term OR any of its CHILD TERMS
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Records annotated with this exact term (annotations to child terms are NOT included)
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| Data Class | Field | Records |
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| Alleles (FBal) | PHENOTYPE_MANIFEST_IN | 31 | | Insertions (FBti) | EXPRESSION_STAGE_TISSUE_POSITION | 7 | | Insertions (FBti) | PHENOTYPE_MANIFEST_IN | 2 | | Constructs (FBtp) | PHENOTYPE_MANIFEST_IN | 12 |
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Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
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| Full annotation statements | Relevant FlyBase reports |
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| Alleles | Genes | Images | Insertions | Constructs |
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tracheal pit (all annotations which use CV term, excluding "NOT" statements) | 31 | 56 | 2 | 9 | 18 | tracheal pit | ectopic | 2 | -- | -- | -- | 1 |
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Relationships