t the mouth. Posteriorly the entoderm Digitized by Microsoft® GERM ;LAYERS. 21 envelops the yolk mass which may be regarded as occupying a distendedmtestine. The entoderm forms the lining of the pharynx and intestine,together with their appendages which include the lungs, liver, pancreas,and… … A B Fig. 20.—Diagrams E.xskd upcjn Reconstructkjns oh a Ciuck o[- 30 Hcmjr.s.A. D<..i-sa! \-iew. B, Median sagiltal section inil with the entire Iieart ant. n.. Anterior neLiro]:iore;ao., aorta; ect., ectoderm; ent., entoderm, Ht., heart; med.gr.. med. tube, medullary ,!j;roo^-e andtnln ; mes.…
Histology · Microscopy
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