Ossification begins in which month of development?

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Study for the Ivy Tech APHY 101 - Skeletal System Test. Enhance your learning with flashcards and multiple choice questions, each question includes hints and explanations. Prepare for success!

Multiple Choice

Ossification begins in which month of development?

Explanation:
Ossification begins around eight weeks of embryonic development, which is the second month. At this time the previously formed cartilage templates of future bones start to be replaced by bone tissue, creating the first primary ossification centers in many long bones and the initial bone formation in flat bones as well. The first month is mainly cartilage formation and early limb patterning, so ossification hasn't started yet. By the third and fourth months, ossification continues and more centers appear, but the initiation of bone formation has already begun in the second month.

Ossification begins around eight weeks of embryonic development, which is the second month. At this time the previously formed cartilage templates of future bones start to be replaced by bone tissue, creating the first primary ossification centers in many long bones and the initial bone formation in flat bones as well. The first month is mainly cartilage formation and early limb patterning, so ossification hasn't started yet. By the third and fourth months, ossification continues and more centers appear, but the initiation of bone formation has already begun in the second month.

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