A2-7 VT1 motor neuron [FBbt_00110281]

Motor neuron developing from neuroblast NB4-1 lineage that innervates the ventral transverse muscle 1 of abdominal segments 2 to 7. It migrates medially and posteriorly during embryonic development (Schmid et al., 1999). It follows the transverse nerve and synapses to the VT1 muscle in the anterior part of the of the next posterior segment via type Ib boutons (Landgraf et al., 1997; Zarin et al., 2019). VT1 is only found in A2-7 segments (Zarin et al., 2019). Following Landgraf et al., 1997, larval motor neurons are named according to the muscle they innervate. The same caveats therefore apply regarding inference of serial homology from nomenclature as for the muscles: Following Bate (1993), larval hypodermal muscles are named for their orientation and numbered based on their order from dorsal to ventral or anterior to posterior. So, except where musculature is essentially identical between segments (as for A1-7, with a couple of exceptions for A1), serial homology should not be assumed on the basis of a shared name.

Open A2-7 VT1 motor neuron in VFB

Example Images

A2-7 VT1 motor neuron A2-7 VT1 motor neuron

VFB Term Json

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