The "'anterior branch of the obturator artery "'is a small artery in the thigh and runs forward on the outer surface of the obturator membrane and then curves downward along the anterior margin of the obturator foramen.
12.
The membrane is attached to the sharp margin of the obturator foramen except at its lower lateral angle, where it is fixed to the pelvic surface of the inferior ramus of the ischium, i . e ., within the margin.
13.
In x-ray imaging dislocation may be indicated if the Shenton's line ( an arc drawn from the medial aspect of the femoral neck through the superior margin of the obturator foramen ) does not result in a smooth arc.
14.
The obturator foramen is generally very small in such animals, although most reptiles do possess a large gap between the pubis and ischium, referred to as the " thyroid fenestra ", which presents a similar appearance to the obturator foramen in mammals.
15.
The obturator foramen is generally very small in such animals, although most reptiles do possess a large gap between the pubis and ischium, referred to as the " thyroid fenestra ", which presents a similar appearance to the obturator foramen in mammals.
16.
Its smaller motor branches are distributed directly to psoas major, while the larger branches leave the muscle at various sites to run obliquely down through the pelvis to leave under the inguinal ligament, with the exception of the obturator nerve which exits the pelvis through the obturator foramen.
17.
It is bounded above by a groove that lodges the tendon of the external obturator; below, it is continuous with the inferior ramus; in front it is limited by the posterior margin of the obturator foramen; behind, a prominent margin separates it from the posterior surface.
18.
The larger branches of the plexus exit the muscle to pass sharply downward to reach the abdominal wall and the thigh ( under the inguinal ligament ); with the exception of the obturator nerve which pass through the lesser pelvis to reach the medial part of the thigh through the obturator foramen.
19.
According to Rauhut ( 2000 ), " Ceratosaurus " can be distinguished based on the following features : a narrow rounded horn core centrally placed on the fused nasals, a median oval groove on nasals behind horn core, a premaxilla with three teeth, premaxillary teeth with reduced extent of mesial serrations, chevrons that are extremely long, a pubis with a large, rounded notch underneath the obturator foramen, small epaxial osteoderms.
