mushroom body primordium [FBbt_00005508]

Embryonic structure from which the mushroom body is derived. The development of the mushroom body proceeds as follows: axonogenesis of embryonic Kenyon cells starts late in embryonic stage 14. The axons from these cells extend towards the lateral protocerebral tract (LTP). During stage 16, a second set of Kenyon cell fibers form a second tract, closely apposed to the first. By late stage 16, both tracts extend anteriorly beyond the LTP to form the distal part of the peduncle. These tracts make a sharp medial turn close to the boundary with the deutocerebrum to form the medial lobe. By late stage 17 the vertical lobe has emerged as a collateral outgrowth from the point where these tracts bend. Finally, the calyx forms near to the end of embryogenesis.
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mushroom body primordium

ID: FBbt_00005508

Nervous system

Embryonic structure from which the mushroom body is derived. The development of the mushroom body proceeds as follows: axonogenesis of embryonic Kenyon cells starts late in embryonic stage 14. The axons from these cells extend towards the lateral protocerebral tract (LTP). During stage 16, a second set of Kenyon cell fibers form a second tract, closely apposed to the first. By late stage 16, both tracts extend anteriorly beyond the LTP to form the distal part of the peduncle. These tracts make a sharp medial turn close to the boundary with the deutocerebrum to form the medial lobe. By late stage 17 the vertical lobe has emerged as a collateral outgrowth from the point where these tracts bend. Finally, the calyx forms near to the end of embryogenesis.

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## Classification

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Alternative Names

Synonym Scope Reference
embryonic central brain mushroom body exact synonym