32. The aorta – position and division in parts. The ascending aorta, the arch of the aorta, the thoracic aorta and the abdominal aorta – position, branches · Human Anatomy and Histology · MU Plovdiv

A O R T A

→ The largest and longest artery of the human body

arises from the left ventricle and continues as the aortic arch in the superior mediastinum

passes on the left side of the vertebral column and then in front of vertebrae in the inferior mediastinum
passes through the aortic hiatus of the diaphragm at the level of T12 and changes here into the abdominal aorta

passes in front of the vertebral column inside the retroperitoneal space
bifurcates into the right and left common iliac arteries at the level of L4
Aorta
Ascending
Right coronary artery
O: Right aortic sinus
S: R atrium & ventricle
Con Rita See My Pen from topic 107
Conus art.
R. marginal
SA node art.
Post. Atrioventric..
Atrial branches.
Left coronary artery
O: Left aortic sinus
S: L. atrium & ventricle
Anterior Atrioventricular artery
conus
Proximal lateral
Distal lateral.
circumflex art.
conus
Marginal
L. Atrial
Aortic Arch
Brachiocephalic Trunk
O: Behind the manubrium of the sternum
Unpaired
behind the R. Subclavian joint
R. Subclavian art.
O: near the 1ˢᵗ rib
S: → R. upper extremity → part of the neck, head, brain → Sup. part of the thorax & back.
R. common carotid art.
O: near 1ˢᵗ rib
S: part of the neck, head, brain.
at 4C in Carotid triangle
External carotid art.
Internal carotid art.
left common carotid art.
O: near the head of 1ˢᵗ rib.
S: part of the head, neck & back.
L. Subclavian art.
" "
S: L. upper extremity → head, brain & neck → sup. of thorax & back.
Descending
Abdominal aorta
Thoracic
O: begins at the level of T3
Descends on the left side of v.c & esophagus.
Post. intercostal arteries
subcostal ar.
Sup. phernic ar.s
Bronchial Branches
Oseophagel
Pericardic
Mediastinal