Archive image from page 178 of The development of the chick;. The development of the chick; an introduction to embryology . developmentofchi00lill Year: 1908 #5 ii'''- Fig. 92. — Transverse section immediately be- hind the first visceral pouch of a chick embryo of thirteen somites. (After Gorono- witsch.) Note connection of the periaxial cord with the ectoderm of the visceral arch. Ad., Aorta descendens. c. Rounded me- senchyme cells, g. Place where cells derived from neural crest unite with the mesenchyme cells of the periaxial cord. f. Fusion, p. Spin- dle-shaped peripheral mesenchym
Archive image from page 178 of The development of the chick;. The development of the chick; an introduction to embryology . developmentofchi00lill Year: 1908 #5 ii'''- Fig. 92. — Transverse section immediately be- hind the first visceral pouch of a chick embryo of thirteen somites. (After Gorono- witsch.) Note connection of the periaxial cord with the ectoderm of the visceral arch. Ad., Aorta descendens. c. Rounded me- senchyme cells, g. Place where cells derived from neural crest unite with the mesenchyme cells of the periaxial cord. f. Fusion, p. Spin- dle-shaped peripheral mesenchyme cells. the ectoderm in the neighborhood of the first visceral pouch must not be confused with the so-called branchial sense-organs, for the primary connection is soon lost, and secondary connec- tions arise at about the 27 s stage, and constitute the true branchial sense-organs of these arches.
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