Which term identifies the end portion of a long bone?

Which term identifies the end portion of a long bone?

• A. Epiphysis
• B. Diaphysis
• C. Endosteum
• D. Haversian canal

Answer: (A)

Identifying the end portion of a long bone: that end region is the epiphysis. The epiphysis is the rounded end that articulates with adjacent bones and is typically covered by articular cartilage. The opposite, middle portion is the diaphysis, which forms the bone’s shaft. The endosteum lines the inner surfaces of the bone’s cavity, while the Haversian canal is the central channel inside each osteon of compact bone. In growing bones, the epiphysis contains the epiphyseal plate (growth plate) that enables lengthwise growth; after growth ends, it becomes the epiphyseal line.

Identifying the end portion of a long bone: that end region is the epiphysis. The epiphysis is the rounded end that articulates with adjacent bones and is typically covered by articular cartilage. The opposite, middle portion is the diaphysis, which forms the bone’s shaft. The endosteum lines the inner surfaces of the bone’s cavity, while the Haversian canal is the central channel inside each osteon of compact bone. In growing bones, the epiphysis contains the epiphyseal plate (growth plate) that enables lengthwise growth; after growth ends, it becomes the epiphyseal line.