Walking Along a Beach, You Find a Vertebra from a Fish

question 76

Multiple Choice

Walking along a beach, you find a vertebra from a fish. Unlike a whale vertebra, the mature bone of this fish species lacks osteocytes. In other words, the mature bone is acellular. This is true of many fish species. How do you think the lack of cells would affect bone function?

• A)The bone would probably not develop properly without cells.
• B)The bone would probably not be able to repair itself if injury occurred without osteoblasts to secrete bone material.
• C)The bone would probably be much more brittle because the presence of cells keeps bone flexible.
• D)The bone would probably be "floppy" because the presence of cells makes the bone stiff.

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