The pectineus is sometimes included in this group, and sometimes excluded . ( It has the same function as the others in this group, but different innervation namely, the femoral nerve .)
12.
The intermediate ridge or pectineal line is continued to the base of the lesser trochanter and gives attachment to the pectineus; the medial ridge is lost in the intertrochanteric line; between these two a portion of the iliacus is inserted.
13.
Behind the pectineus, it distributes branches to the adductor longus and gracilis, and usually to the adductor brevis, and in rare cases to the pectineus; it receives a communicating branch from the accessory obturator nerve when that nerve is present.
14.
Behind the pectineus, it distributes branches to the adductor longus and gracilis, and usually to the adductor brevis, and in rare cases to the pectineus; it receives a communicating branch from the accessory obturator nerve when that nerve is present.
15.
The femoral ring is bounded in front by the inguinal ligament, behind by the pectineus covered by the pectineal fascia, medially by the crescentic base of the lacunar ligament, and laterally by the fibrous septum on the medial side of the femoral vein.
16.
In human anatomy, the "'groin "'( the adjective is " inguinal ", as in inguinal canal ) is the junctional area ( also known as the inguinal region ) between the abdomen and the thigh on either side of the pectineus.
17.
It leaves the pelvis in front of the obturator externus and descends in front of the adductor brevis, and behind the pectineus and adductor longus; at the lower border of the latter muscle it communicates with the saphenous branches of the femoral nerve, forming a kind of plexus.
