three routes can be recognized : nc cells facing the bulk of the somite accumulate to form a spinal ganglion , those facing the intersomitic space can readily reach periaortic areas to contribute to the primary sympathetic chain , and cells at intermediate levels between these two accumulate between the neural tube and the somite but some of them can escape between the sclerotome and the myotome and settle near the aorta .
C0376449
somite
C1522301
sclerotome