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Laboratory 12. Anterior and Medial Thigh Region
Step 3. Saphenous Hiatus and Femoral Sheath

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Open the femoral sheath and identify the structures in the three compartments [femoral vein is indicated by the two probes; the artery is lateral to the vein]. Make a longitudinal cut in the femoral vein just below the level of the inguinal ligament to expose the valves, which prevent blood from being forced retrograde into the veins during periods of increased intraabdominal pressure.

Lateral to the femoral sheath clean the surface of the Iliopsoas and identify the femoral nerve. Its branches will be studied later in this exercise. Now, review the relative position of these structures, from lateral to medial: femoral nerve, femoral artery, and femoral vein.

Links and References:
Grant's: 516 and 517
Netter (1ed.): 470 (2ed.): 466
Rohen/Yokochi: 426, 440, and 450