The SFA passes through an opening in what tendon to enter the popliteal fossa?

The answer is correct because the superficial femoral artery (SFA) passes through the adductor hiatus, which is an opening in the adductor magnus tendon. This anatomical feature allows the SFA to extend from the thigh into the popliteal fossa, where it becomes the popliteal artery.

The adductor hiatus plays an essential role in the vascular anatomy of the lower limb, as it provides a passageway for the artery while still allowing the surrounding muscles to function properly. This structural relationship is important for understanding blood flow in the leg, particularly during activities that require movement and stability.

The other tendons mentioned, such as the quadriceps tendon, patellar tendon, and Achilles tendon, do not facilitate the passage of the SFA into the popliteal fossa and relate to different anatomical structures and functions in the leg.