. The elements of embryology. Embryology; Embryology. VI.] THE CKANIAL AND SPINAL NEKVES. 125 round the alimentary canal to reach the mesoblast above it, AOA and AO would have formed one continuous curved space. In sections lower down in the back the two aortse, AO, one on each side, would be found fused into one median canal. an examination of Fig. 41, where the two roots of the vagus nerve (vg) are shewn growing out from the neural band. Shortly after this stage the neural band becomes separated from the external epiblast, and constitutes Fig. Transverse Section through the Posterior Pa
. The elements of embryology. Embryology; Embryology. VI.] THE CKANIAL AND SPINAL NEKVES. 125 round the alimentary canal to reach the mesoblast above it, AOA and AO would have formed one continuous curved space. In sections lower down in the back the two aortse, AO, one on each side, would be found fused into one median canal. an examination of Fig. 41, where the two roots of the vagus nerve (vg) are shewn growing out from the neural band. Shortly after this stage the neural band becomes separated from the external epiblast, and constitutes Fig. Transverse Section through the Posterior Part op the Head of an Embryo Chick op Thirty Hours. hb. hind-brain ; v^. vagus nerve ; ep. epiblast; ch. notochord ; X. thickening of hypoblast (possibly a rudiment of the sub- notochordal rod) ; al. throat; ht. heart; pjo. body cavity ; so. somatic mesoblast; sf. splanchnic mesoblast; Ay. hypo- Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Foster, M. (Michael), Sir, 1836-1907; Balfour, Francis M. (Francis Maitland), 1851-1882; Sedgwick, Adam, 1854-1913; Heape, Walter, 1855-1929. London : Macmillan and Co.
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Keywords: ., bookcentury1800, bookdecade1, booksubjectembryology, bookyear1883
