Question

When you bend your knee, the quadriceps muscle is stretched. This increases the tension in the quadriceps tendon attached to your kneecap (the patella), which, in turn, increases the tension in the patella tendon that attaches your kneecap to your lower leg bone (the tibia). Simultaneously, the end of your upper leg bone (the femur) pushes outward on the patella. The figure shows how these parts of a knee joint are arranged (Figure 1). Figure 1 of 1 Quadriceps tendon Femur Patella ? = 42° Patella tendon Tibia Enter the standard angle using three significant figures. ? = ° from the positive x-axis

          When you bend your knee, the quadriceps muscle is stretched. This increases the tension in the quadriceps tendon attached to your kneecap (the patella), which, in turn, increases the tension in the patella tendon that attaches your kneecap to your lower leg bone (the tibia). Simultaneously, the end of your upper leg bone (the femur) pushes outward on the patella. The figure shows how these parts of a knee joint are arranged (Figure 1).

Figure 1 of 1

Quadriceps tendon
Femur
Patella
? = 42°
Patella tendon
Tibia

Enter the standard angle using three significant figures.

? = ° from the positive x-axis

When you bend your knee, the quadriceps muscle is stretched. This increases the tension in the quadriceps tendon attached to your kneecap (the patella), which, in turn, increases the tension in the patella tendon that attaches your kneecap to your lower leg bone (the tibia). Simultaneously, the end of your upper leg bone (the femur) pushes outward on the patella. The figure shows how these parts of a knee joint are arranged (Figure 1).

Figure 1 of 1

Quadriceps tendon
Femur
Patella
? = 42°
Patella tendon
Tibia

Enter the standard angle using three significant figures.

? = ° from the positive x-axis

Added by Albert D.

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