Fig. 5
From: The growth pattern of the human intestine and its mesentery
Mesenteric architecture accentuates boundaries of secondary loops. Right-sided (panels a1-c1) and cranial (panels a2-c2) views of the reconstructed midgut mesentery after removal of the intestinal tube at CS18 (s97; panel a), CS20 (462; panel b) and CS23 (s4141; panel c). The colors of the cut edges of the mesentery match the color code of the corresponding parts of the intestine. The mesocolon is shown in purple. Ovals: umbilical orifice. Note the central position of the right vitelline vein (7) along the central mesenteric rod. The formation of tertiary loops was associated with a lengthening of the mesenteric leaves (red arrows in panels a1, b1) that define the secondary loops (compare panels b and c). Interactive 3D-PDFs are available online (3D-PDFs CS20, CS23)