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AFA Certified Farrier (CF) Practice Test

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Which term describes the area near the ends of long bones where bone growth occurs?
Correct Answer:
Physis
Explanation:
Growth occurs at the cartilaginous growth plate, called the physis, which sits near the ends of long bones between the epiphysis (the end part) and the metaphysis (the region just inward from the end). This plate contains proliferating cartilage cells that continually divide and are gradually replaced by bone through endochondral ossification, allowing the bone to lengthen during development. As growth finishes, the physis closes and becomes an epiphyseal line. The shaft is the diaphysis, and the area just beneath the growth plate is the metaphysis, which participates in growth but is not where the growth zone itself is located.

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