part of develops from adult mushroom body corpora pedunculata https://cdn.ncbi.nlm.nih.gov/pmc/blobs/acda/10213501/ccb19d89b056/iyad064f6.jpg MB fly_anatomy.ontology Bilaterally paired neuropil structure situated postero-dorsally in the protocerebrum that functions in olfactory associative learning and memory. The mushroom body is divided into: the calyx, which is closest to the cell body rind and receives sensory interneuron afferents; the pedunculus, which is a thick axon bundle extending from the calyx to the base of the lobes; and the mushroom body lobe system, which consists of a vertical branch composed of two intertwined lobes (alpha and alpha') and a medial branch consisting of three parallel lobes (beta, beta' and gamma) (Crittenden et al., 1998; Ito et al., 2014). VFB:FBbt_00003684 FBbt:00003684 mushroom body adult cerebrum adult protocerebrum embryonic/larval mushroom body