Fill in the Blank QuestionFill in the blank question.At the level of the knee, the anterior and posterior tibial veins form a single trunk called the vein.

The vein that is formed at the level of the knee by the anterior and posterior tibial veins is called the popliteal vein.

Explanation

The popliteal vein is an important structure in the venous drainage of the lower limb. It is located in the popliteal fossa, which is the shallow depression located at the back of the knee joint. This vein is formed by the confluence of the anterior tibial vein, which drains blood from the anterior compartment of the leg, and the posterior tibial vein, which drains blood from the posterior compartment. The popliteal vein then continues upwards to become the femoral vein as it passes through the adductor canal in the thigh. Proper functioning of the popliteal vein is crucial for efficient blood return from the leg to the heart and plays a role in maintaining proper circulatory health.