branchial arch
Embryonic gill structure
Branchial arches are paired structures in vertebrate embryos that develop into different parts of the head and neck—the jaw, ear bones, throat muscles, and other features.
In fish, these arches become gills.
In humans, they're visible only during early fetal development, when the embryo briefly resembles other vertebrate forms.
Also called pharyngeal arches.
Embryonic tissue forming muscles
- ectodermEmbryo's outer cell layer
- endodermInnermost embryonic tissue layer
- somiteEmbryonic tissue segment
- morphogenesisDevelopmental shape emergence
segmentation · organogenesis · embryonic · fetal · differentiation · Hox genes · cranial nerves · thymus
Upper jaw bone
Structural similarity through descent
- vertebrateSpinal column animal
- chordateNotochord-possessing animal
- phylogenyEvolutionary relationships among organisms
- ancestralOf one's forebears
comparative anatomy · fish · amphibian · tetrapod · vestigial · adaptation · natural selection · fossils
Chromosomal microdeletion disorder
- craniofacialOf skull and face
- cleft palateCongenital oral roof opening
- congenitalExisting from birth
- malformationAbnormally developed structure
mesoderm
Embryonic tissue forming muscles
- ectodermEmbryo's outer cell layer
- endodermInnermost embryonic tissue layer
- somiteEmbryonic tissue segment
morphogenesis · segmentation · organogenesis · embryonic · fetal · differentiation · Hox genes · cranial nerves · thymus · parathyroid
maxilla
Upper jaw bone
homology
Structural similarity through descent
- vertebrateSpinal column animal
- chordateNotochord-possessing animal
- phylogenyEvolutionary relationships among organisms
ancestral · comparative anatomy · fish · amphibian · tetrapod · vestigial · adaptation · natural selection · fossils · paleontology
DiGeorge syndrome
Chromosomal microdeletion disorder
- craniofacialOf skull and face
- cleft palateCongenital oral roof opening
- congenitalExisting from birth
malformation · syndrome · anomaly · defect · pediatric
- gillsgill, gills, gill slit, gill slits, operculum
- pharyngeal arches
- skull bonesfrontal bone, nasal bone, maxilla, mandible, vomer