If You Break Your Leg, the Bone Heals by Forming

question 42

Multiple Choice

If you break your leg, the bone heals by forming a thickened area around the outside of the bone. Over a period of time, this thickened area:

• A)is eaten away by osteoclasts.
• B)becomes a permanent part of the spongy bone.
• C)is digested by enzymes secreted by the muscles.
• D)forms new tendons, ligaments, and/or muscles.
• E)moves to the skin surface and is shed as dead skin.

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Definitions:

Central Canals

Channels running longitudinally in the spine's bones, carrying blood vessels and nerves to nourish and innervate the bone.

Osteons

Structural units of compact bone, consisting of concentric layers of calcified matrix and central canals containing blood vessels.

Diaphysis

Diaphysis refers to the shaft or central part of a long bone, which is composed primarily of compact bone to provide strength.

Articular Cartilage

A smooth, slippery tissue that covers the ends of bones in joints, facilitating movement and absorbing shocks.