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Skandalakis' Surgical Anatomy
Chapter 12. Great Vessels in the Abdomen
Sections: Abdominal Aorta, Inferior Vena Cava, References.
Topics Discussed: abdominal vessels; arterial disease.
Excerpt:
"The anatomic and surgical history of the abdominal aorta is the
history of the vascular system. It is presented in Table 12-1.The aortic sac is responsible for the embryologic development
of the aorta. The sac is the terminal portion of the truncus arteriosus.
The truncus arteriosus represents the distal portion of the bulbus cordis.
All these complex embryologic entities are related to the formation
of the cardiac loop. (The interested reader is encouraged to read
Embryology For Surgeons2
).The abdominal aorta (Fig. 12-1), extending downward from T12
as a continuation of the thoracic aorta, is approximately 10 cm
long. It terminates at the lower one-third of the body of L4 (60% of cases).9
Here
it trifurcates as the right and left common iliac arteries and the
middle sacral artery. For practical purposes this is really a bifurcation,
as the middle sacral artery represents a small median branch emerging
between the two common iliacs.The celiac trunk often arises at the lower margin of T12, but
it may originate..."
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