The ends of the femur are covered in a smooth, slippery substance called articular cartilage. This cartilage protects and cushions the bone when you bend and straighten your knee. The normal anatomy of the knee.
Answer:
Involuntary
Explanation:
Smooth muscle is found in places that line internal organs, blood vessels, and organs. All of which are not under voluntary control
Answer:B
Explanation:catching it early on will help.the earlier one discovers the better.
