skeletal
The patella is part of the knee, therefor it is part of the skeletal system.
Knee
nervous and muscular
The knee is a simple machine. Duh
Knee
The tibia is the strongest bone below the knee.
Knee and Elbow
The knee.
The knee joint is the largest and most extensive in the human body.
Your immune system.
Yes just like anyother bone in the body.
Nervous system and Muscular system usually. For some, the Sensory system, a part of the Nervous system, also has to do with reflexes.