What structure allows the hoof to expand and contract?

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Multiple Choice

What structure allows the hoof to expand and contract?

The hoof’s ability to expand and contract comes from soft tissue inside the hoof, not from the hard horn. The digital cushion is a pliable pad of fat and fibrous tissue beneath the coffin bone that acts as a shock absorber. When the hoof bears weight, the digital cushion compresses and pushes outward against the hoof wall, allowing the hoof capsule to widen slightly. As weight is relieved, it rebounds, helping the hoof contract back to its resting shape. The collateral cartilages help support the hoof and contribute to its overall resilience, but they don’t drive expansion the way the digital cushion does. Hyaline cartilages line joints for smooth motion, and the periople provides a protective covering over the horn; neither of these primarily enables hoof expansion.

The hoof’s ability to expand and contract comes from soft tissue inside the hoof, not from the hard horn. The digital cushion is a pliable pad of fat and fibrous tissue beneath the coffin bone that acts as a shock absorber. When the hoof bears weight, the digital cushion compresses and pushes outward against the hoof wall, allowing the hoof capsule to widen slightly. As weight is relieved, it rebounds, helping the hoof contract back to its resting shape. The collateral cartilages help support the hoof and contribute to its overall resilience, but they don’t drive expansion the way the digital cushion does. Hyaline cartilages line joints for smooth motion, and the periople provides a protective covering over the horn; neither of these primarily enables hoof expansion.

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