The compounds in the chest

On the sternum cartilage of the combined upper seven pairs of ribs are formed sternocostal joints (articulationes stemocostales) supported by the radiant sternocostal ligaments (connecting the costal cartilage to the surface of the sternum). Cartilage VIII, IX and X of edges connecting to the cartilage overlying ribs, form interchondral joints.

In Fig. 16.
Joints and ligaments of the sternum and ribs, front view
1 - the internal intercostal muscles;
2 - external intercostal muscles;
3 - the body of the sternum;
4 - sternocostal joints;
5 - sternocostal ligament;
6 - interchondral joints
In Fig. 17.
Joints and ligaments of the sternum and ribs, rear view
1 - lateral edge-transverse ligament;
2 - the internal intercostal membrane;
3 - external intercostal muscles;
4 - nadostistaya ligament;
5 - mezhpoperechnaya ligament;
6 - yellow ligament

If you inhale and exhale the sternum and attached to her front ends of the ribs move up and down. This movement correspond to the rotational motion of the posterior ends of the ribs. The rotation axis runs along the neck edge and self rotation is at the junction of ribs with the vertebra.

In Fig. 18.
Joints and ligaments of ribs and thoracic vertebrae VIII
1 - dugootrostchaty joint between VII and VIII of the thoracic vertebrae;
2 - lateral edge-transverse ligament;
3 - edge-transverse joint;
4 - the upper edge, the transverse ligament;
5 - the transverse process;
6 - edge-transverse ligament;
7 - neck edge;
8 - joint head of the edge;
9 - Head of the edge;
10 - vertebral body
In Fig. 19.
Joints and ligaments sternum, ribs and vertebrae
1 - transverse process;
2 - edge-transverse joint;
3 - head of the edge;
4 - the angle of the edge;
5 - joint capsule head edge;
6 - the body of an edge;
7 - cartilage ribs;
8 - the body of the sternum;
9 - membrane sternum;
10 - Radiant sternocostal ligament


Connection with the edges of the vertebrae is provided by means of combined joints of cylindrical shape. These joints are composed of edge-transverse joint (articulatio costotransversaria), otherwise known as joint costal tubercle, and joint head of rib (articulatio capitis costae). Although anatomically these joints are not the whole, the movement of them occur simultaneously, and therefore the edge-transverse joint and the joint head of the edge can be considered as a single joint. XI and XII of edge-edge cross-joints do not have.

Edge-transverse joint formed by the articular surface of the ribs and costal tubercle fossa transverse process of vertebra. Edge-reinforced strong transverse joint ligaments: the upper (lig. costotransversarium superius) and lateral (lig. costotransversarium laterale) edge-transverse ligaments, as well as edge-transverse ligament (lig. costotransversarium), which occupies the entire space between the transverse processes of the vertebrae and the neck edge.

The joint is formed by head-head edges of the ribs and costal poluyamkami adjacent vertebrae (Head I, II and XII ribs are hollow pits of the vertebrae). Inside the joint is supported by intra-articular ligament head edge (lig. capitis costae intraarticulare), and outside - a bunch of radiant heads ribs (lig. capitis costae radiatum). Do I, II and XII ribs intraarticular ligament head fins are absent.

List of Abbreviations

a., aa. — arteria, arteriae (artery, the artery)

lig., ligg. — ligamentum, ligamenta (ligament, the ligaments)

m., mm. — musculus, musculi (muscle, the muscle)

n., nn. — nervus, nervi (nerve, the nerve)

r., rr. — ramus, rami (branch)

s. — seu (or)

v., vv. — vena, venae (vienna)