Femoral canal ring, through which bowel can sometimes enter, causing a femoral hernia. Though femoral hernias are rare, their passage through the inflexible femoral ring puts them at particular risk of strangulation, giving them surgical priority. The position of the femoral canal medially to the femoral vein is of physiologic importance. The space of the canal allows for the expansion of the femoral vein when venous return from the lower limbs is increased or when increased intra-abdominal pressure (valsalva maneuver) causes a temporary stasis in the venous flow. Femoral canal In human anatomy of the leg, the femoral sheath has three compartments.
Femoral vessel Femoral vessel The femoral vessels are those blood vessels passing through the femoral ring into the femoral canal thereby passing down the length of the thigh until behind the knee. These large vessel are the: Lymphatic vessels found in the thigh aren’t usually included in this collective noun. As the blood vessels pass along the thigh, they branch, with their main branches remaining closely associated, where they are still referred to collectively as femoral vessels. The adjective femoral, in this case, relates to the thigh, which contains the femur. The relative position of these two large vessels is very important