. A laboratory manual and text-book of embryology. Embryology. Cartilage of nasal septum ' V if % : &. Naso-lachry. rnal duct MecKels cartilaqe Fig. 352.—Transverse section through the nasal passages and palatine processes of a 20 mm. embryo. In the nasal septum is seen a section of the organ of Jacobson. X 30. replaces it and constitutes the primitive palate (Fig. 350 D). The primitive palate forms the lip and the premaxillary palate. The nasal fossa? now open externally through the external nares and internally into the roof of the mouth cavity through the primitive choance. Coincident w
. A laboratory manual and text-book of embryology. Embryology. Cartilage of nasal septum ' V if % : &. Naso-lachry. rnal duct MecKels cartilaqe Fig. 352.—Transverse section through the nasal passages and palatine processes of a 20 mm. embryo. In the nasal septum is seen a section of the organ of Jacobson. X 30. replaces it and constitutes the primitive palate (Fig. 350 D). The primitive palate forms the lip and the premaxillary palate. The nasal fossa? now open externally through the external nares and internally into the roof of the mouth cavity through the primitive choance. Coincident with these changes the median frontal process has become rela- tively smaller and that portion of it between the external nares and the nasal fossa? becomes the nasal septum (Fig. 351 A, B). As the facial region grows and elongates, the primitive choanae become longer and form slit-like openings in the roof of the mouth cavity. By the development and fusion of the palatine pro-. 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
Size: 2171px × 1151px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectembryology, bookyear1
