CARDIOLOGY
AORTIC STENOSIS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
In Scoliodon the first pair of aortic arch (the mandibular) disappears, hence there are only ____ pairs of aortic arches.
|
|
3
|
|
|
4
|
|
|
6
|
|
|
5
|
Explanation:
Detailed explanation-1: -The aortic arches are a series of six arches that develop consecutively to connect the aortic sac with the paired dorsal aorta. Cardiac neural crest cells migrate through aortic arches 3, 4, and 6 during weeks 3-4 of human development.
Detailed explanation-2: -The Aortic Arches All six pairs are not present simultaneously; they develop and regress at different stages. First aortic arch-regresses early, but a remnant forms a portion of the maxillary artery. Second aortic arch-regresses early, but a remnant forms portions of the hyoid and stapedial arteries.
There is 1 question to complete.