THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The aortic arch, arch of the aorta, or transverse aortic arch (English: /eɪˈɔːrtɪk/) is the part of the aorta between the ascending and descending aorta. The arch travels backward, so that it ultimately runs to the left of the trachea.

Detailed explanation-2: -Brachiocephalic trunk: also called the brachiocephalic artery, is the first and largest artery that branches off the aortic arch.

Detailed explanation-3: -The left aortic arch with circumflex aorta may result in severe tracheobronchial compression leading to respiratory compromise, especially in the pediatric patients, necessitating surgery (41). In such patients, compression may be relieved by division of the ductus or ligamentum arteriosum.

Detailed explanation-4: -The descending aorta begins at the end of the aortic arch and continues down into the abdomen. There are two parts to the descending aorta. The thoracic aorta runs from the aortic arch to the diaphragm, which is the point of separation between the chest cavity and the abdominal cavity.