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Questions and Answers
What are the three fasciae of the posterior abdominal wall?
What are the three fasciae of the posterior abdominal wall?
Psoas fascia, Fascia iliaca, Thoraco-lumbar fascia
What are the great vessels of the abdomen?
What are the great vessels of the abdomen?
Abdominal aorta and inferior vena cava
Where does the abdominal aorta begin?
Where does the abdominal aorta begin?
As the continuation of descending thoracic aorta at the aortic orifice of the diaphragm
What is the function of the muscles of both sides of the posterior abdominal wall?
What is the function of the muscles of both sides of the posterior abdominal wall?
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Which artery fixes the 12th rib during inspiration for effective contraction of the diaphragm?
Which artery fixes the 12th rib during inspiration for effective contraction of the diaphragm?
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Study Notes
Posterior Abdominal Wall
- The three fasciae of the posterior abdominal wall are the psoas fascia, the lumbar fascia, and the thoracolumbar fascia.
Great Vessels of the Abdomen
- The great vessels of the abdomen include the abdominal aorta and the inferior vena cava.
Abdominal Aorta
- The abdominal aorta begins at the aortic hiatus of the diaphragm.
Function of Muscles of the Posterior Abdominal Wall
- The muscles of both sides of the posterior abdominal wall, specifically the psoas major and quadratus lumborum, function to flex the lumbar spine and stabilize the pelvis.
Fixation of the 12th Rib
- The 12th rib is fixed by the crus of the diaphragm during inspiration, allowing for effective contraction of the diaphragm and expansion of the lungs.
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