MSK 28 - Posterior Abdominal Wall, Pelvis, and Clinical-II Flashcards
What is the lumbosacral trunk?
Nervous tissue that connects the lumbar plexus with the sacral plexus.
What regions of the body are innervated by the lumbar plexus? Sacral plexus?
How can the femoral nerve be located on a cadaver?
The femoral nerve may be identified lateral and slightly hidden under the psoas major muscle
How can the obturator nerve be located on a cadaver?
The obturator nerve is cord like located medial to psoas major and can easily be identified in the pelvis “very obvious”
How can the lumbosacral trunk be located on a cadaver?
The lumbosacral trunk wraps around the sacral ala closely and appears flat
What is the mnemonic to remember the roots of the lumbar plexus? List the roots of the lumbar plexus and their general locations.
What are the structures supplied by each branch of the lumbar plexus?
What is the cremasteric reflex and why does it occur?
What does a pudendal nerve block do and how is it done?
At what vertebral level does the aorta pass through the diaphragm?
T12
At what vertebral level does the abdominal aorta bifurcate? What does it bifurcate into?
L4
The common iliac arteries
What do the common iliac arteries divide into and what areas do these divisions supply?
Two very important notes about pelvic arteries.
What do the internal and external iliac veins receive blood from? Where do these two veins merge?
Where does the Inferior Vena Cava begin? Do the tributaries to the IVC correspond with the branches of the aorta?
What does the IVC receive blood directly from?
What does the IVC receive blood indirectly from?
What can result from an IVC obstruction?
How can venous blood reach the right atrium when the IVC is obstructed?
Facts to know about abdominal and pelvic lymphatics.
