Figure 75

Photomicrograph of several cartilages that form the initial skeleton of the foot. The hyaline cartilage of developing tarsal bones will be replaced by bone as endochondral ossification proceeds. In this early stage of development, synovial joints are being formed between developing tarsal bones. Note that nonarticulating surfaces of the hyaline cartilage models of tarsal bones are covered by the perichondrium, which also contributes to the development of joint capsules. Also, a developing tendon (T) is evident in the indentation of the cartilage seen on the left side of the micrograph. x85.

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