Intermaxillary segment

Intermaxillary segment

Diagram showing the regions of the adult face and neck related to the fronto-nasal process and the branchial arches. (Globular processes labeled at center right.)
Gray's	subject #13 68
Precursor	medial nasal prominence^[1]
Gives rise to	primary palate^[2]

In a human embryo, the inter-maxillary segment is a mass of tissue which forms from the merging of some of the tissues in the vicinity of the nose. It is essential for human survival. It is primordial, meaning that in the further development of the embryo, this particular mass no longer appears, but parts of it remain in "the inter-maxillary portion of the upper jaw, the pro-labial 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.^[3] It gives rise to the premaxilla.^[4]

Head end of human embryo of about thirty to thirty-one days.
Same embryo as shown in Fig. 45, with front wall of pharynx removed.
The roof of the mouth of a human embryo, aged about two and a half months, showing the mode of formation of the palate.
The head and neck of a human embryo thirty-two days old, seen from the ventral surface.

References

External links

http://www.ana.ed.ac.uk/anatomy/database/humat/notes/embryo/branchi.htm
http://isc.temple.edu/marino/embryology/Face98/face_text.htm

This article incorporates text from a public domain edition of Gray's Anatomy.

Human development of head and neck (GA 1.65, TE E5.3, 5.4)

Face

Nasal placode
Nasal pit
nasal prominences
- Lateral
- Medial
Intermaxillary segment

Oral cavity

Palate	Primary palate Secondary palate

Tongue	Lateral lingual swelling Tuberculum impar Copula linguae Hypopharyngeal eminence Gustatory placode

General branchial apparatus	Pharyngeal groove Cervical sinus Pharyngeal arch 1st 2nd Pharyngeal pouch

M: MOU

anat/devp

noco/cofa (c)/cogi/tumr, sysi

proc (peri), drug (A1)

This developmental biology article is a stub. You can help World Heritage Encyclopedia by expanding it.

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.

Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.

By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Intermaxillary segment