Which tissue forms the hard outer surface of bones?

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Study for the Muscular System and Skeletal System Exam. Learn with flashcards and multiple choice questions, where each question has explanations and hints. Be well-prepared and confident on your test day!

Multiple Choice

Which tissue forms the hard outer surface of bones?

Explanation:
Compact bone forms the hard outer surface of bones. It is a dense, protective shell organized into osteons, with minerals like calcium phosphate giving the rigidity needed to withstand daily stresses. This outer layer provides strength and durability for weight-bearing and protection. Inside it, marrow fills the central cavity and spongy bone sits toward the ends of bones, providing lighter support. Cartilage covers joint surfaces as a smooth, flexible layer, and is not the hard outer shell.

Compact bone forms the hard outer surface of bones. It is a dense, protective shell organized into osteons, with minerals like calcium phosphate giving the rigidity needed to withstand daily stresses. This outer layer provides strength and durability for weight-bearing and protection. Inside it, marrow fills the central cavity and spongy bone sits toward the ends of bones, providing lighter support. Cartilage covers joint surfaces as a smooth, flexible layer, and is not the hard outer shell.

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