Arterial arches development video
There are 6 aortic arches, the 5th is transient. The aortic sac develops from the truncus arteriosus and is connected to all the aortic arches. Then the development shapens the arches and they form the aortic sac superiorly. The right dorsal aorta of the 4th arch moves upwards and the left dorsal aorta moves downwards and forms the final configuration of the arterial arches.
Arteries in the embryo take origin from the aortic sac which originally was connected to a paired dorsal aortae. They arrive segmentally to supply the pharyngeal arches at 1st, 2nd, 3rd, 4th, 5th and 6th aortic arches. The 5th aortic arch disappears and the 5th pharyngeal arch. Again the 1st, and 2nd arches are obliterated at their ventral aspects. The 3rd arch is incorporated into the common carotid artery. The 4th aortic arch together with...
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Creator: Oluwole Ogunranti