Knee Joint Function and Anatomy

The video explains the anatomy and function of the knee joint, highlighting its critical role in mobility. It covers the knee's structure, including bones, ligaments, tendons, and cartilage, and explains how these components work together to maintain stability and function. The video also discusses the importance of the meniscus in weight distribution and joint stability, as well as the role of nerves and blood vessels in knee function.

What is the primary function of a well-functioning knee joint?

• To enhance upper body strength

• To facilitate mobility such as standing, walking, and running

• To regulate body temperature

• To improve digestion

Which term describes the side of the knee closest to the other knee?

• Lateral

• Anterior

• Posterior

• Medial

What is the role of articular cartilage in the knee joint?

• To connect muscles to bones

• To supply blood to the knee

• To absorb shock and provide a smooth surface for motion

• To transmit nerve signals

Which ligaments prevent the knee from moving too far side to side?

• Tibial nerve and common peroneal nerve

• Anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL)

• Medial collateral ligament (MCL) and lateral collateral ligament (LCL)

• Patellar tendon and quadriceps tendon

What is the primary function of the menisci in the knee?

• To transmit nerve signals

• To supply blood to the knee joint

• To distribute weight and enhance stability

• To connect the femur to the tibia

How do the menisci protect the articular cartilage?

• By concentrating force on a small area

• By acting as a wedge to stabilize the knee

• By increasing blood flow

• By preventing nerve damage

What is the function of tendons in the knee?

• To transmit nerve signals

• To connect muscles to bones

• To supply blood to the knee

• To connect bones to bones

Which nerve travels down the back of the leg and supplies sensation and muscle control?

• Sciatic nerve

• Femoral nerve

• Common peroneal nerve

• Tibial nerve

What happens if the popliteal artery is damaged beyond repair?

• The leg may not survive

• The knee becomes more flexible

• The knee joint becomes more stable

• The foot loses sensation

What is the role of the extensor mechanism in the knee?

• To supply blood to the knee

• To transmit nerve signals

• To bend the knee

• To drive the knee joint and allow walking