| branchial pouches | pharyngeal pouches |
|---|---|
| branchial region | Region containing paired arched columns that bear gills in lower aquatic vertebrates and appear in the embryos of higher vertebrates in comparable form. In higher vertebrates the arches are subsequently modified into structures of the neck and ear. (12 Dec 1998) |
| carpal arches | Two anastomotic arterial twigs running transversely across the wrist: the palmar or anterior lies in front of the carpus, being formed by palmar carpal branches of the radial and ulnar arteries; the dorsal or posterior lies on the dorsal surface of the carpus, being formed by the dorsal carpal branches of the radial and ulnar arteries. (05 Mar 2000) |
| visceral arches | Typically, 6 arch's in vertebrates; in the lower vertebrates, they bear gills; in the higher vertebrates, they appear transiently and give rise to specialised structures in the head and neck. Synonym: pharyngeal arches, visceral arches. (05 Mar 2000) |
| pharyngeal arches | Typically, 6 arch's in vertebrates; in the lower vertebrates, they bear gills; in the higher vertebrates, they appear transiently and give rise to specialised structures in the head and neck. Synonym: pharyngeal arches, visceral arches. (05 Mar 2000) |
| cortical arches of kidney | The portions of renal substance (cortex) intervening between the bases of the pyramids and the capsule of the kidney. (05 Mar 2000) |
| haemal arches | <anatomy> Three or four V-shaped bones located ventral to the bodies of the third to sixth coccygeal vertebrae; they represent intercentra and usually enclose the ventral caudal artery and vein. (05 Mar 2000) |
| postoral arches | The series of branchial arch's caudal to the mouth; the first is the mandibular, the second is the hyoid; caudal to the hyoid, the arch's are unnamed, and designated only by their postoral number. (05 Mar 2000) |
| Haller's arches | More specifically see: lateral arcuate ligament, medial arcuate ligament. (05 Mar 2000) |
| primitive costal arches | Arch's formed in the thoracic region of the vertebral column in the embryo from the costal processes or costal elements which give rise to the ribs. (05 Mar 2000) |
| fallen arches | A breaking down of the arch's of the foot, either longitudinal, transverse, or both; the resulting deformity is flat or splay foot, or both. (05 Mar 2000) |