Musculus psoas minor

The video tutorial discusses the psoas minor muscle, a small and inconsistently present muscle in the inner hip. It covers the muscle's origin, insertion, nerve supply, and function. The psoas minor is absent in about 50% of the population, and when present, it originates from the 12th thoracic and first lumbar vertebrae. It is innervated by the first three lumbar nerves. The muscle's main function is to stabilize the pelvis and hip joint and assist in trunk flexion. Due to its intra-abdominal location, palpation is not possible.

What percentage of the population lacks the psoas minor muscle?

• 25%

• 75%

• 50%

• 100%

Where does the psoas minor muscle originate when it is present?

• On the sides of the 12th thoracic and 1st lumbar vertebrae

• On the femur

• On the iliac crest

• On the sacrum

To which structure does the psoas minor attach distally?

• Greater trochanter

• Eminentia Ilio Publika

• Acetabulum

• Lesser trochanter

Which nerves innervate the psoas minor muscle?

• Anterior rami of the first three lumbar nerves

• Femoral nerve

• Sciatic nerve

• Obturator nerve

What is the primary function of the psoas minor muscle?

• Rotation of the trunk

• Stabilization of the pelvis and hip joint

• Extension of the hip

• Flexion of the knee