01 / Location & anatomical relationships
At the center front of the rib cage.
02 / Structure & organization
The sternum consists of manubrium, body and xiphoid process. Costal cartilages attach along its sides, and the clavicles articulate superiorly. The sternal angle marks the manubriosternal junction.
03 / Function
Many ribs connect to it through cartilage.
04 / Mechanism
This flat bone joins the collarbones above and receives cartilage connections from many ribs. Together they form the front of the chest's protective framework. Its broad surface also provides muscle attachments.
Part of a bigger picture
The sternum belongs in our bones & movement collection. Explore the nearby parts to see how this area of the body fits together.
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Connect structure with function
The second costal cartilage meets near the sternal angle, making it useful for rib counting. The sternum is part of the protective and mobile anterior thoracic wall.
Check your understanding
Locate the sternum in relation to its neighbors. Explain how the structural features described above support its function, then distinguish it from a nearby structure with a different role.
Keep learning
Continue with OpenStax Anatomy and Physiology for system-level study. This atlas is educational and has not undergone independent medical peer review.