Which category includes the humerus as an example?

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Multiple Choice

Which category includes the humerus as an example?

The main idea is bone shape classification. The humerus fits the long bone category because it has a long, cylindrical shaft (the diaphysis) with two ends (epiphyses), making it longer than it is wide. Long bones are built for leverage and movement, featuring a compact bone outer layer with a central marrow cavity, and they serve as major sites for muscle attachment and joint formation. Other bone types include short bones, which are cube-shaped like wrist and ankle bones; flat bones, which are thin and curved such as the skull bones and sternum; and irregular bones, which have complex shapes like the vertebrae. The humerus isn’t cube-shaped, thin and curved, or irregular, so it’s classified as a long bone.

The main idea is bone shape classification. The humerus fits the long bone category because it has a long, cylindrical shaft (the diaphysis) with two ends (epiphyses), making it longer than it is wide. Long bones are built for leverage and movement, featuring a compact bone outer layer with a central marrow cavity, and they serve as major sites for muscle attachment and joint formation.

Other bone types include short bones, which are cube-shaped like wrist and ankle bones; flat bones, which are thin and curved such as the skull bones and sternum; and irregular bones, which have complex shapes like the vertebrae. The humerus isn’t cube-shaped, thin and curved, or irregular, so it’s classified as a long bone.

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