Study was made on 16 human embryos at developmental stages 13-15 (fifth week). The facial nerve was traced on serial sections made in three planes (sagittal, frontal and horizontal) and stained with routine histological methods and impregnated with silver. In embryos at stage 13 the facial ganglion forms a complex structure with the vestibulocochlear… (More)
Introduction. There are controversies in literature as to the differentiation of sclerotomes and contribution of sclerotomic parts in the development of vertebrae. Considering the controversies and availabity to human embryos with detailed estimated age we decided to investigate the problem. Aim. The aim of study was to trace the formation of sclerotomes… (More)
White communicating rami were traced in 8 human embryos of developmental stages 14 and 15 (aged 33 and 36 postovulatory days, respectively). In embryos at stage 14 the white communicating rami were found in the spinal nerves T1 to T9. In embryos at stage 15 the white communicating rami were present at the spinal cord levels T1 to L3.