. A laboratory manual and text-book of embryology. Embryology. Somatic mesoderm Primitive groove Edoderm I \ Coelom Entoderm / Primitive streak Splanehnie mes. Fig. 50:—Transverse section through the primitive streak of a thirty:six-hour chick embryo. X 90. SptanchnopUure '. entiated tissue of the primitive streak beneath the primitive groove. Between the splanchnic mesoderm and entoderm blood-vessels are present laterad as in the preceding sections. Mesodermal Segments.—We have seen that these are developed by the ap- pearance of transverse furrows in the mesoderm (Fig. 51). Later a longitudi

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. A laboratory manual and text-book of embryology. Embryology. Somatic mesoderm Primitive groove Edoderm I \ Coelom Entoderm / Primitive streak Splanehnie mes. Fig. 50:—Transverse section through the primitive streak of a thirty:six-hour chick embryo. X 90. SptanchnopUure '. entiated tissue of the primitive streak beneath the primitive groove. Between the splanchnic mesoderm and entoderm blood-vessels are present laterad as in the preceding sections. Mesodermal Segments.—We have seen that these are developed by the ap- pearance of transverse furrows in the mesoderm (Fig. 51). Later a longitudinal furrow partially separates the paired segments from the lateral unsegmented mesoderm. The segments are block-like with rounded angles when viewed. 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 Prentiss, Charles William, 1874-1915. Philadelphia, London, W. B. Saunders

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectembryology, bookyear1