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Welcome to
LifeMap Discovery

Watch the introductory video to learn more about our database of embryonic development for stem cell research and regenerative medicine

All Anatomical Compartments > Compartment Card
Head Mesenchyme >

Branchial Arch 1


Branchial arch 1 is a transient facial anatomical structure which includes: neural crest, mesoderm, endoderm, and ectoderm. Among others, it will give rise to the maxillary, mandibular, and some of the middle ear bones.

Branchial arch 1 is a Hox-negative compartment. This arch appears as pairs of mesenchymal structures during the fourth and fifth week of human development.

Pharyngeal arch 1
Branchial Arch 1
Multiple Ancestors Single Ancestor No Descendants Develops from Part of Parent