insect tracheal pit
embryonic tracheal pit
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.
| Tipo | Organ |
| Estructura principal | insect tracheal primordium |
| Nombre latino | embryonic tracheal pit |
Preguntas frecuentes
What is the insect tracheal pit?
What is the Latin name for the insect tracheal pit?
Estructuras relacionadas
Aviso médico
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