Which is not true about development of the axial skeleton?
A. The sphenoid bone forms by endochondral ossification.
B. The vertebrae form secondary ossification centers at puberty.
C. The ribs and clavicles form from sclerotomes.
D. The sternum forms by fusion of the sternal bars.
E. The parietal and frontal bones develop by intramembranous ossification.
Answer: C
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Fill in the blank(s) with the appropriate word(s).
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Which of the following do costal cartilages connect?
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