The physis is the growth plate.

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Prepare for the VetSkill Level 3 Diploma VN02 – Diagnostic Principles Test. Engage with multiple-choice questions, hints, and explanations. Achieve your certification!

Multiple Choice

The physis is the growth plate.

Explanation:
The growth plate is a cartilage region that enables bones to lengthen as an animal grows. It sits between the end part of the bone (the epiphysis) and the shaft region (the metaphysis). The term physis specifically refers to this growth plate. It’s where cartilage cells proliferate and are gradually replaced by bone, a process called endochondral ossification, driving longitudinal growth. Once growth stops at puberty, the physis closes and forms an epiphyseal line. The other structures are different parts of bone anatomy: the epiphysis is the end portion of the bone, the diaphysis is the shaft, and the periosteum is the outer fibrous membrane covering the bone.

The growth plate is a cartilage region that enables bones to lengthen as an animal grows. It sits between the end part of the bone (the epiphysis) and the shaft region (the metaphysis). The term physis specifically refers to this growth plate. It’s where cartilage cells proliferate and are gradually replaced by bone, a process called endochondral ossification, driving longitudinal growth. Once growth stops at puberty, the physis closes and forms an epiphyseal line.

The other structures are different parts of bone anatomy: the epiphysis is the end portion of the bone, the diaphysis is the shaft, and the periosteum is the outer fibrous membrane covering the bone.

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