Early Development, Develop. Physiol., Dr. D. Penney



Figure 2.01 - The Origin and Development of the Early Human Heart.

A. Sagittal section at a presomite stage
B. Sagittal section at 7 somites (shows reversal of the heart and pericardial coelom)
C. Transverse section through the ventricle at 7 somites
D. Transverse section through the paired atria at 7 somites




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