In the described anatomy, the limb with more check ligaments is the

• A. Pelvic
• B. Thoracic
• C. Forelimb
• D. Hind limb

Answer: (B)

Check ligaments help limit tendon movement and provide passive support, forming part of the stay apparatus that keeps a limb extended with less muscular effort. In many quadrupeds, the forelimb (the thoracic limb) bears most of the body's weight and needs to stay extended while standing. To accomplish this efficiently, it develops more check ligaments that tether the flexor tendons to bones, reducing the need for constant muscle activity. The hind limb, while essential for propulsion and movement, requires more flexibility and range of motion, so it has fewer check ligaments. Therefore, the limb with more check ligaments is the thoracic limb.