MEDS12002 Lecture Notes - Lecture 2: Pulmonary Circulation, Superior Pancreaticoduodenal Artery, Pediatrics

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26 May 2018
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1 | P a g e
Abdominal vasculature
Aorta
The main trunk of the systemic arterial circulation, comprising four
parts: the ascending aorta, the arch of the aorta, the thoracic portion
of the descending aorta, and the abdominal portion of the descending
aorta. It starts at the aortic opening of the left ventricle, rises a short
distance, bends over the root of the left lung, descends within the
thorax on the left side of the vertebral column, and passes through the
aortic hiatus of the diaphragm into the abdominal cavity. It branches
into the two common iliac arteries.
aortic, adj.
Inferior Vena Cava
A large vein formed by the union of the two common iliac veins that
receives blood from the lower limbs and the pelvic and abdominal
viscera and empties into the right atrium of the heart. Also called
postcava
.
Arteries
Hollow elastic tubes that carry blood away
from the heart
Tunica intima (inner layer) which itself has
three layers
Tunica media (middle layer)
Tunica adventitia (external layer)
Aorta
Largest principal artery in the body
Divided into five sections:
Root of the aorta
Ascending aorta and arch
Descending aorta
Abdominal aorta and abdominal aortic
branches
Bifurcation of the aorta into iliac arteries
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2 | P a g e
Longitudinal (sagittal) section of the Aorta imaged with ultrasound
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3 | P a g e
Size of Abdominal Aorta and Iliac Branches
Inferior phrenic arteries
Celiac trunk
Superior Mesenteric Artery (SMA)
Middle suprarenal arteries
Renal arteries
Lumbar arteries
Gonadal arteries
Inferior Mesenteric Artery (IMA)
Median Sacral Artery
MEN WOMEN
Diaeter +/-SD  Diaeter +/-SD 
AORTA . +/-. . +/-.
CIA . +/-. . +/-.
CFA .9 +/-. 9. +/-.
CIA, Coo iliac artery; CFA, coo feoral artery
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Document Summary

The main trunk of the systemic arterial circulation, comprising four parts: the ascending aorta, the arch of the aorta, the thoracic portion of the descending aorta, and the abdominal portion of the descending aorta. It branches into the two common iliac arteries. aortic, adj. A large vein formed by the union of the two common iliac veins that receives blood from the lower limbs and the pelvic and abdominal viscera and empties into the right atrium of the heart. Arteries: hollow elastic tubes that carry blood away from the heart, tunica intima (inner layer) which itself has three layers, tunica media (middle layer, tunica adventitia (external layer) Divided into five sections: root of the aorta, ascending aorta and arch, descending aorta, abdominal aorta and abdominal aortic branches, bifurcation of the aorta into iliac arteries. Longitudinal (sagittal) section of the aorta imaged with ultrasound.

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