Describe the anatomy of the femoral vein as it relates to central venous cannulation.
Anatomical questions are best answered with a standard structure that details the location; the boundaries (anterior/posterior, superior/inferior, medial/lateral); a description of the contents of that area and layers; and the relevant surface anatomy. For this question a description of the femoral triangle and boundaries, the origin and termination of femoral vein along with its tributaries, the relationship of the femoral vein to different structures in the triangle and information about femoral sheath and its contents was expected. Marks were also awarded for detailing the surface anatomy of femoral vein relevant to cannulation. This was an anatomy question as such details of femoral vein cannulation technique, complications and the risks associated with femoral venous access was not required