The intermaxillary segment in an

embryo An embryo is an initial stage of development of a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male spe ...

is a mass of tissue formed by the merging of tissues in the vicinity of the

nose A nose is a protuberance in vertebrates that houses the nostrils, or nares, which receive and expel air for respiration alongside the mouth. Behind the nose are the olfactory mucosa and the sinuses. Behind the nasal cavity, air next passes th ...

. It is essential for human survival. It is primordial, since in the further development of the embryo this particular mass no longer appears, but parts of it remain in "the intermaxillary portion of the upper jaw, the portion of the upper lip, and the primary palate". More precisely, the rounded lateral angles of the medial process constitute the globular processes. It is also known as the "Intermaxillary segment". It gives rise to the premaxilla.Development Of The Head And Neck
/ref> File:Gray45.png, Head end of human embryo of about thirty to thirty-one days. File:Gray46.png, Same embryo as shown in Fig. 45, with front wall of pharynx removed. File:Gray50.png, The roof of the mouth of a human embryo, aged about two and a half months, showing the mode of formation of the palate. File:Gray947.png, The head and neck of a human embryo thirty-two days old, seen from the ventral surface.

References

External links

* https://web.archive.org/web/20060925073054/http://www.ana.ed.ac.uk/anatomy/database/humat/notes/embryo/branchi.htm * https://web.archive.org/web/20080219072510/http://isc.temple.edu/marino/embryology/Face98/face_text.htm Embryology {{Portal bar, Anatomy

See also

References

External links