Which part of a long bone contains the central medullary cavity?

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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

Which part of a long bone contains the central medullary cavity?

Explanation:
The central medullary cavity is located in the diaphysis, which is the shaft of a long bone. This hollow space runs through the middle of the bone, lined by endosteum and typically filled with marrow (yellow marrow in adults). The diaphysis is designed to be strong yet lightweight, made mainly of compact bone surrounding that central cavity. The ends of the bone are the epiphyses, which house spongy bone, and the region between the shaft and ends is the metaphysis; the periosteum is the outer covering. So the central medullary cavity sits in the diaphysis.

The central medullary cavity is located in the diaphysis, which is the shaft of a long bone. This hollow space runs through the middle of the bone, lined by endosteum and typically filled with marrow (yellow marrow in adults). The diaphysis is designed to be strong yet lightweight, made mainly of compact bone surrounding that central cavity. The ends of the bone are the epiphyses, which house spongy bone, and the region between the shaft and ends is the metaphysis; the periosteum is the outer covering. So the central medullary cavity sits in the diaphysis.

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