单项选择题

The only innervation of the femoral nerve below the level of the knee is （）.

A．the gracilis muscle
B．the tibialis anterior muscle
C．the adductor longus
D．the skin on the medial side of leg and foot
E．the skin of the lateral side of leg and foot

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单项选择题

The following structures pass through the infrapiriform foramen, EXCEPT （）.

A．superior gluteal artery.
B．sciatic nerve.
C．posterior femoral cutaneous nerve.
D．pudendal nerve.
E．internal pudendal vein and artery.

单项选择题

The contents of the popliteal fossa, EXCEPT （）.

A．tibial nerve
B．common peroneal nerve
C．popliteal vein and its tributaries
D．popliteal artery and its branches
E．deep peroneal nerve