. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. PARSONS: NASAL EMBRYOLOGY 127 I'lised, tlieir epidermal epithelium is still visible as a ])an(l nin- iiing from the ventral border of the nasal cavity to the face and palate, as shown in Fio-ure 74. Ilistolouieally, there is still little differentiation. The iiasal opithelinm is markedly thicker dorsally and medially than in the. 20C Figure 18. 973 (; MC>. Sagittnl seetioiis tliroiiiili the iias:il area. A, section 80; B, S sections medial to A; and C, 10 medial to I>. 18x. Figure 19. ChnjsfmvN
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. PARSONS: NASAL EMBRYOLOGY 127 I'lised, tlieir epidermal epithelium is still visible as a ])an(l nin- iiing from the ventral border of the nasal cavity to the face and palate, as shown in Fio-ure 74. Ilistolouieally, there is still little differentiation. The iiasal opithelinm is markedly thicker dorsally and medially than in the. 20C Figure 18. 973 (; MC>. Sagittnl seetioiis tliroiiiili the iias:il area. A, section 80; B, S sections medial to A; and C, 10 medial to I>. 18x. Figure 19. ChnjsfmvN 1079 (9.(i; MC). Transverse sections through the nasal area. A, section 240; B, 7 sections posterior to A ; C, 10 jiosterior to B ; D, 6 posterior to C; and E, 5 posterior to D. 18x. Figure 20. Chryscmys 1080 (; MC). Frontal sections through the nasal area. A, section 80; B, 17 sections vential to A; and C, 22 ventral to B. 18x. ventrolateral portions, but there are no sharp boundaries be- tween the regions. HoAvever, the thicker portion appears to be well innervated, while no branches of the olfactory nerve could be traced to the thinner parts, and tlie former shows a frreater. 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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