Fasciculus intramedullaris accessorius in the development of the human embryonic spinal accessory nerve.
In embryos at stage 16 (37 days) the intramedullary roots of the spinal accessory nucleus ascend in the marginal layer of the spinal cord within one segment. These fibers form the intramedullary accessory fascicle of the XIth nerve. This fasciculus was observed in further developmental stages of investigated embryos.
Department of Anatomy, Karol Marcinkowski University of Medical Sciences, Poznań.
A
A
Skórzewska
M
M
Bruska
W
W
Woźniak
D000055:Accessory Nerve / Q000196:embryology*; D005314:Embryonic and Fetal Development / Q000502:physiology; D006801:Humans; D009412:Nerve Fibers / Q000648:ultrastructure*