The iliopsoas is formed by which two muscles?

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Multiple Choice

The iliopsoas is formed by which two muscles?

Explanation:
The iliopsoas is formed by two muscles that fuse together: psoas major and iliacus. The psoas major originates along the lumbar spine, while the iliacus originates from the iliac fossa; they join to form a single tendon that inserts on the lesser trochanter of the femur. This combined muscle is the primary hip flexor and plays a key role in stabilizing the pelvis during movement. The other options involve muscles that are not part of the iliopsoas: pectineus is an anterior thigh muscle with a different function, and piriformis and obturator internus are deep lateral rotators, not contributors to the iliopsoas.

The iliopsoas is formed by two muscles that fuse together: psoas major and iliacus. The psoas major originates along the lumbar spine, while the iliacus originates from the iliac fossa; they join to form a single tendon that inserts on the lesser trochanter of the femur. This combined muscle is the primary hip flexor and plays a key role in stabilizing the pelvis during movement. The other options involve muscles that are not part of the iliopsoas: pectineus is an anterior thigh muscle with a different function, and piriformis and obturator internus are deep lateral rotators, not contributors to the iliopsoas.

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