sternum

Sternal Angle

Sternal Angle The diagram indicates the sternal angle of Louis. The sternal angle is the angle formed between the manubrium of the sternum and the body of the sternum (manubriosternal junction), and is an important anatomical landmark. It marks the level of the 2nd pair of costal cartilages which lies at the level of the intervertebral disc between thoracic vertebrae 4 and 5. This level represents several important anatomical features: Beginning and end of the aortic arch Bifurcation of the trachea Bifurcation of the pulmonary trunk Left recurrent laryngeal loops under arch of aorta Ligamentum arteriosum lies at this level …

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sternal angle

Xiphoid Process

Xiphoid Process The highlighted structure is the xiphoid process of the sternum. The sternum consists of three parts: Manubrium of the sternum Body of sternum Xiphoid process The xiphoid process is the most inferior part of the sternum and is the smallest part. Learn more about the sternum in this tutorial!
xiphoid process

Manubrium of Sternum

Manubrium of Sternum The highlighted structure is the manubrium of the sternum. The sternum consists of three parts Manubrium of the sternum Body of sternum Xiphoid process The manubrium of the sternum is the superior part of the sternum. The manubrium has the following features: Jugular notch (suprasternal notch) – you can palpate this notch yourself if you feel in the midline between the proximal ends of your clavicles. Articular site for clavicle Facet for attachment of first costal cartilage Demifacet for articulation with second costal cartilage Where the manubrium meets the body of the sternum, is a joint called …

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Manubrium