ultrastructural analysis of normal and experimental material revealed the presence of four distinct kinds of axon terminals differing in size , synaptic vesicles type , relation to postsynaptic targets and in origin : ( i ) large terminals with multiple extended asymmetric synaptic membrane specializations and containing round , clear vesicles arise from the spherical cells of the ipsilateral anteroventral cochlear nucleus , ( ii ) most of the small axon terminal profiles - engaged in asymmetric synaptic contacts - originated from the trapezoid nucleus , ( iii ) terminal boutons containing pleomorphic vesicles belong to fibers descending from the ipsilateral multipolar neurons in the central nucleus of the inferior colliculus and from the nuclei of the lateral lemniscus while ( iv ) boutons containing exclusively ovoid vesicles and remaining intact after complete deafferentation of the nucleus were considered to be of local origin .
C0007634
cells
C0007610
nucleus