Which of the following tendons is primarily responsible for bending and straightening the knee?

• A. Rotator cuff tendon
• B. Achilles tendon
• C. Patellar tendon
• D. Biceps tendon

Answer: (C)

Verified step by step guidance

1. Identify the location and function of each tendon mentioned in the options.
2. Understand that the knee joint is primarily involved in flexion (bending) and extension (straightening) movements.
3. Recognize that the patellar tendon connects the quadriceps muscle group to the tibia, playing a crucial role in knee extension.
4. Note that the rotator cuff tendon is associated with shoulder movement, not the knee.
5. Acknowledge that the Achilles tendon is involved in ankle movement, and the biceps tendon is related to elbow movement, not the knee.