Question

The ____________ all insert on the tibial tuberosity (by way of the patella).

A) extensors of the coxal joint
B) flexors of the coxal joint
C) extensors of the knee joint
D) flexors of the knee joint

Answer 1

The extensors of the knee joint insert on the tibial tuberosity via the patella, particularly the quadriceps femoris muscle group, responsible for leg extension at the knee.

Step-by-step explanation:

The extensors of the knee joint all insert on the tibial tuberosity by way of the patella. These muscles are responsible for knee extension, a movement that involves increasing the angle between the femur and the tibia. The quadriceps femoris muscle group, comprised of the rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius, is the main extensor of the knee. Their tendons converge to form the quadriceps tendon which encapsulates the patella and continues distally as the patellar tendon, attaching to the tibial tuberosity. This tendon plays a crucial role in the mechanics of knee movements, aiding in the extending of the leg at the knee joint.