Which of the following gluteal muscles can medially rotate & abduct thigh?

Which of the following nerve(s) innervate(s) the triceps coxae?

What are the muscle actions of triceps coxae at hip?

What is/are the muscle action(s) of the muscle at hip shown in the picture?

Pectineus flexes and adducts the thigh.

What are the actions of adductor magnus?

The short head of biceps femoris is innervated by common fib part of the sciatic nerve.

Where is the insertion of semimembranosus?