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An electron microscopic study of the corpus cardiacum of adult Drosophila melanogaster and its afferent nerves
Author(s) -
Aggarwal Surinder K.,
King Robert C.
Publication year - 1971
Publication title -
journal of morphology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 74
eISSN - 1097-4687
pISSN - 0362-2525
DOI - 10.1002/jmor.1051340405
Subject(s) - biology , corpus allatum , afferent , anatomy , drosophila melanogaster , cytoplasm , ultrastructure , cell bodies , microbiology and biotechnology , central nervous system , endocrinology , hormone , juvenile hormone , biochemistry , gene
The left and right afferent nerves to the corpus cardiacum contain approximately 50 and 90 axons, respectively, when they enter the gland. Both bifurcate within the gland, so that four nerves leave the corpus cardiacum. These, however, contain a total of 90 axons. Of the 50 axons unaccounted for 30 are believed to terminate in the corpus cardiacum and 20 in the corpus allatum. The corpus cardiacum contains 12 intrinsic neurosecretory cells which are disposed laterally with respect to the extrinsic axons. Many of these contain neurosecretory spheres and presumably originate in the brain. The intrinsic corpus cardiacum cells also contain neurosecretory granules, and they produce short cytoplasmic processes which interdigitate with the extrinsic axons.