The thorax in other animalsAs far as animals in general go, the thorax is the anterior region of the trunk. In vertebrates, the thorax is the region of the body containing the heart and lungs within the rib cage. Only in mammals is it clearly marked off from the abdomen by the diaphragm.
In insects, the thorax is the second body region, located between the head and abdomen. It is the region where the legs and wings are attached. In other arthropods, especially crustaceans and arachnids, the thorax is fused with head to form a cephalothorax.
ThoracotomyAn operation in which the chest is opened to provide access to organs in the chest (thoracic) cavity.
There are two types of thoracotomy: lateral and anterior. In a lateral thoracotomy the chest is opened between two ribs to provide access to the lungs, major blood vessels, and the esophagus. In an anterior thoracotomy, an incision down the length of the sternum (breastbone) provides access to the heart and the coronary arteries.
Related category• ANATOMY AND PHYSIOLOGY
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