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The costal margin is the medial margin formed by the cartilages of the seventh to tenth ribs. It attaches to the body and xiphoid process of the sternum. [2] The thoracic diaphragm attaches to the costal margin. [3] The costal angle is the angle between the left and right costal margins where they join the sternum. [2]
The medial end of the first is continuous with the sternum; the medial ends of the six succeeding ones are rounded and are received into shallow concavities on the lateral margins of the sternum. The medial ends of the eighth, ninth, and tenth costal cartilages are pointed, and are connected each with the cartilage immediately above.
The right border of the heart (right margin of heart) is a long border on the surface of the heart, and is formed by the right atrium. The atrial portion is rounded and almost vertical; it is situated behind the third, fourth, and fifth right costal cartilages about 1.25 cm. from the margin of the sternum .
The costochondral joints are the joints between the ribs and costal cartilage in the front of the rib cage.They are hyaline cartilaginous joints (i.e. synchondrosis or primary cartilagenous joint).
Anatomy of the costal cartilage. Costochondritis typically presents unilaterally (one side), which is typically the left side. [4] It affects primarily the 2nd to 5th ribs at the sternocostal and costochondral joints. [1] The most commonly reported symptom of costochondritis is chest pain that is often exacerbated by movement and deep breathing.
It is located approximately 7 cm inferior to the superior margin of the manubrium. [citation needed] The sternal angle is used in the definition of the thoracic plane. [citation needed] The angle also marks the level of a number of features: Boundary between the superior and inferior portion of the mediastinum [citation needed]
Goss was the esteemed editor of the 25th edition of the seminal classic Gray’s Anatomy. Internationally lauded as the authority on all things anatomical, Gray’s Anatomy had been considered essential for any would-be physician to own since it was first published in London in 1858. It was written by Dr. Henry Gray and illustrated by Henry ...
an adjective related to the rib (Latin: costa) in anatomy Costal cartilage, a type of cartilage forming bars which serve to prolong the ribs forward; Costal margin, the medial margin formed by the false ribs; Costal surface (disambiguation) Costal groove, a groove between the ridge of the internal surface of the rib