Thorax
The thorax (also referred to as the thoracic crest or chest) was a division of a person's or animal's body that lay between the head and the abdomen. The heart and the lungs resided in the thoracic cavity, as well as many blood vessels. The inner organs were protected by the rib cage and the sternum. 

Having one thorax is but one of many anatomical characteristics of humanoid lifeforms. In Humans, the thorax is the region of the chest formed by the sternum, the thoracic vertebrae and the ribs, and extends from the neck to the diaphragm. In insects, the thorax is one of three main divisions of the creature's body, each of which is in turn composed of multiple segments. 

During his interrogation of the Nausicaan prisoner, Matthew Ryan kicked him into his chest. ()

In 2268, a dying Leonard McCoy suffered from bleeding in his chest and abdomen after he was tortured by the Vians. ()

After the  was damaged, Dr. Julian Bashir treated seven Klingons with thoracic perforation trauma caused by shrapnel. ()

In 2373, Tova Veer suffered minor phaser burns to the upper thoracic region after being stunned by Tuvok. ()

In 2374, Captain Kathryn Janeway received plasma burns to her thoracic region after being beamed from an exploding Borg cube.()

The thoracic assembly was a collection of cybernetic devices implanted within every Borg drone. Following the surgical removal of many of her implants, former Borg drone Seven of Nine no longer had access to the instruments that were part of her thoracic assembly. ()

Later that year, two Hirogen hunted down a member of Species 8472 on an asteroid and fired their weapons at its thoracic crest, believing they killed it. ()

See also 
 Thoracic scan

Appendices

Background information 
In the revised final draft script of , chest pains were experienced by a Romulan centurion who had been injured in battle. He therefore found swallowing too difficult, which led the centurion to have to reject a medicine which a Romulan commander, his commanding officer, tried to get him to drink.

Apocrypha 
In the sixth story arc of the non-canon Star Trek comic strip, it is mentioned that the Distosian species has no skull; instead, their brain is located in their thorax.

External link 
 
Anatomy
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