Regional anatomy

Thorax · மார்பு

The chest wall, the lungs and airways, and the heart with its great vessels.

Not shown here. The chambers, valves and conducting system are inside the modelled heart wall and cannot be seen from outside it.

Structures in this region

Each opens the atlas with that structure selected.

A cone-shaped muscular organ in the middle of the chest, tilted so its apex points down and to the left.

The right lung has three lobes, the left only two, because the heart takes the space.

A ringed tube in front of the oesophagus, running from the larynx down into the chest.

A broad domed sheet of muscle separating the chest from the abdomen.

Leaves the left ventricle and carries oxygenated blood into the systemic circulation.

A flat bone on the front of the chest that the true ribs reach through their cartilage.

12 pairs, each joined behind to a thoracic vertebra. Pairs 1–7 are true or vertebrosternal, joined to the sternum by their own cartilage.

A lobed structure behind the sternum, large in a child and shrinking with age.

The heart in place with the great vessels leaving it, and the arterial and venous trees as separate layers you can show one at a time.

The conducting path from the trachea to the primary bronchi and into both lungs, and the diaphragm below them.