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  2. Thoracic vertebrae - Wikipedia

    en.wikipedia.org/wiki/Thoracic_vertebrae

    The twelfth thoracic vertebra has the same general characteristics as the eleventh, but may be distinguished from it by its inferior articular surfaces being convex and directed lateralward, like those of the lumbar vertebrae; by the general form of the body, laminae, and spinous process, in which it resembles the lumbar vertebrae; and by each ...

  3. Rib cage - Wikipedia

    en.wikipedia.org/wiki/Rib_cage

    The rib cage or thoracic cage is an endoskeletal enclosure in the thorax of most vertebrates that comprises the ribs, vertebral column and sternum, which protect the vital organs of the thoracic cavity, such as the heart, lungs and great vessels and support the shoulder girdle to form the core part of the axial skeleton.

  4. Sternal angle - Wikipedia

    en.wikipedia.org/wiki/Sternal_angle

    The sternal angle is a palpable and visible landmark in surface anatomy, presenting as either a slight body ridge or depression upon the upper chest wall which corresponds to the underlying manubriosternal joint. [4] The sternal angle is palpable and often visible in young people. [2]: 319. The sternal angle corresponds to the level of the 2nd ...

  5. Thorax - Wikipedia

    en.wikipedia.org/wiki/Thorax

    In mammals, the thorax is the region of the body formed by the sternum, the thoracic vertebrae, and the ribs. It extends from the neck to the diaphragm, and does not include the upper limbs. The heart and the lungs reside in the thoracic cavity, as well as many blood vessels. The inner organs are protected by the rib cage and the sternum.

  6. Thoracic cavity - Wikipedia

    en.wikipedia.org/wiki/Thoracic_cavity

    The thoracic cavity (or chest cavity) is the chamber of the body of vertebrates that is protected by the thoracic wall (rib cage and associated skin, muscle, and fascia). The central compartment of the thoracic cavity is the mediastinum. There are two openings of the thoracic cavity, a superior thoracic aperture known as the thoracic inlet and ...

  7. Sternum - Wikipedia

    en.wikipedia.org/wiki/Sternum

    Structure. The sternum is a narrow, flat bone, forming the middle portion of the front of the chest. The top of the sternum supports the clavicles (collarbones) and its edges join with the costal cartilages of the first two pairs of ribs. The inner surface of the sternum is also the attachment of the sternopericardial ligaments. [ 2 ]

  8. Cisterna chyli - Wikipedia

    en.wikipedia.org/wiki/Cisterna_chyli

    In humans, the cisterna chyli is located posterior to the abdominal aorta on the anterior aspect of the bodies of the first and second lumbar vertebrae (L1 and L2). There it forms the beginning of the primary lymph vessel, the thoracic duct, which transports lymph and chyle from the abdomen via the aortic opening of the diaphragm up to the junction of left subclavian vein and internal jugular ...

  9. Suprasternal notch - Wikipedia

    en.wikipedia.org/wiki/Suprasternal_notch

    Structure. The suprasternal notch is a visible dip in between the neck, between the clavicles, and above the manubrium of the sternum. It is at the level of the T2 and T3 vertebrae. [1] The trachea lies just behind it, rising about 5 cm above it in adults.