The costal margin, also known as the costal arch, [1] is the lower edge of the chest (thorax) formed by the bottom edge of the rib cage. 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.

2022年12月22日 · The costal margin forms the lower margin of the thoracic wall. It functions to protect higher abdominal organs such as the liver as the greater part of the liver lies just below the right costal margin.

The costal margin, also known as the costal arch, is the lower, curved border of the thoracic cage formed by the cartilaginous ends of the lower ribs. It serves as an important anatomical landmark and plays a role in the structure and function of the thoracic cavity.

The costal margin (costal arch) is an arch formed by the medial margin of the cartilages of false ribs and one true rib (seventh rib to the tenth rib).

The costal margin is the lower edge of the chest (thorax) formed by the bottom edge of the rib cage. Sometimes referred to as the costal arch, it is the medial margin formed by the false ribs and one true rib—specifically, from the seventh rib to the tenth rib.

The costal margin provides attachment sites for the diaphragm and abdominal muscles including the internal and external obliques, transversus abdominis, and rectus abdominis. The anatomy of the costal margin has more recently been shown to be quite variable.

1997年5月1日 · Focal masses have a subtle appearance on plain radiographs and may be better imaged with computed tomography (CT) or magnetic resonance imaging. Chondrosarcoma of the costal margin typically appears as an expansile mass with coarse calcifications and an associated soft-tissue mass.

2024年12月1日 · This complex cartilaginous structure is referred to as the costal margin, which provides attachments for the diaphragm and various abdominal muscles. Although historically thought to be a consistent structure, its variable nature has recently been defined in …

2024年6月16日 · The costal margin, the lower border of the rib cage, is formed by the junction of the costal cartilages of the lower six ribs. It supports and protects abdominal organs and plays a vital role in respiration, allowing for chest expansion during inhalation and exhalation.

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