Progress in myelin formation of the thoracic sympathetic trunk in human fetus aged 17 weeks.
In 17th week old fetus the interganglionic rami of the thoracic sympathetic trunk are mainly composed of bundles of unmylinated fibers. The well myelinated fibers have 11 compact myelin lamellae. Although many fibers are already myelinated, fibers in various phases of myelinogenesis are found.
Bruska
M
M
Department of Anatomy, University School of Medical Sciences, Poznań.
Woźniak
W
W
D005333:Fetus / Q000033:anatomy & histology* / Q000502:physiology; D005728:Ganglia, Sympathetic / Q000196:embryology* / Q000648:ultrastructure; D005865:Gestational Age; D006801:Humans; D009412:Nerve Fibers / Q000502:physiology / Q000648:ultrastructure; D009413:Nerve Fibers, Myelinated / Q000502:physiology* / Q000648:ultrastructure*; D013564:Sympathetic Nervous System / Q000196:embryology* / Q000648:ultrastructure