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Horse Anatomy Exam 1 Practice

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Which term describes the dense, hard outer structure of the bone?
Correct Answer:
Compound bone
Explanation:
Compact bone is the dense, hard outer layer of bone, also known as cortical bone. It forms a sturdy shell around the inner cancellous (spongy) bone and is organized into tightly packed osteons with concentric lamellae around a central canal that carries blood vessels and nerves. This highly organized structure gives bone its strength and rigidity, allowing it to resist bending and support body weight. The other terms refer to different structures: concha are nasal bones shelves, articular cartilage covers joint surfaces, and "compound bone" isn’t a standard term in horse anatomy.

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