ACL stands for which of the following?

• A. Acromioclavicular Ligament
• B. Anterior Central Ligament
• C. Anterolateral Ligament
• D. Anterior Cruciate Ligament

Answer: (D)

This question tests recognizing a common anatomical abbreviation for a knee ligament. ACL stands for Anterior Cruciate Ligament, a central stabilizer inside the knee that runs from the back of the femur to the front of the tibia, crossing with the posterior cruciate ligament to form a cross (“ cruciate” means cross). It mainly prevents the tibia from sliding forward relative to the femur and helps control rotational movements, which is why it’s frequently injured during sports that involve rapid stops and pivots.

The other terms refer to different structures: the shoulder’s acromioclavicular ligament connects the acromion to the clavicle; the Anterior Central Ligament isn’t a standard knee term; and the Anterolateral Ligament is a separate knee structure on the outer side, not the one abbreviated ACL.