One of a series of bony or cartilaginous arches that develop in the walls of the mouth cavity and pharynx of the embryo.
hog:0000296 pharyngeal arch 1hog:0000297 pharyngeal arch 2hog:0000298 pharyngeal arch 3hog:0000299 pharyngeal arch 4hog:0001204 pharyngeal arch 5hog:0001205 pharyngeal arch 6hog:0000122 aortic archhog:0001203 pharyngeal pouchBFO:0000050 part of
tao:0001306