10 Questions
What is the primary action of the muscle innervated by the posterior division of the obturator nerve?
Lateral rotation of the thigh
Which nerve supplies the muscle responsible for lateral rotation of the thigh at the hip joint?
Obturator nerve
Which spinal levels contribute to the posterior division of the obturator nerve?
L3, L4
Which nerve innervates the muscle responsible for medial rotation of the thigh at the hip joint?
Sciatic nerve
If a muscle is supplied by the femoral nerve, what is its likely action at the hip joint?
Flexion of the hip
What is the primary muscle that forms the iliopsoas muscle?
Psoas major
Where does the psoas major muscle originate from?
Transverse processes, bodies, and intervertebral discs of the 12th thoracic vertebra and all lumbar vertebrae
Which nerve supplies the psoas major muscle?
Anterior rami of lumbar nerves (L1,2,3)
Where does the iliopsoas muscle insert?
Lesser trochanter of the femur
Which two muscles combine to form the iliopsoas muscle?
Psoas major and iliacus muscles
Test your knowledge on the origin of the Gemellus Inferior muscle which arises from the upper aspect of the ischial tuberosity. Identify key anatomical landmarks and structures.
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