In humans and other hominids, the thorax is the chest region of the body between the neck and the abdomen, along with its internal organs and other contents. It is mostly protected and supported by the rib cage, spine, and shoulder girdle. Explore the anatomy and function of the chest and upper back bones with Innerbody's interactive 3D model. Chest pain may be sharp or dull. It might come and go, or you might always feel the pain. The exact symptoms depend on the cause. Many different things can cause chest pain. The most life-threatening causes involve the heart or lungs. So it's important to get medical help for an accurate diagnosis. Your chest is the upper part of the trunk of your body, stretching from your neck to your abdomen. It holds and protects some of your most important organs. The American College of Chest Physicians (CHEST) is the global leader in advancing best patient outcomes through innovative chest medicine education, clinical research, and team-based care. Some chest muscles, like the intercostals, are considered axial muscles, as their origin and insertion both lie in the axial skeleton. These muscles, which lie deep in the thoracic region, form the walls of the thoracic cavity and mostly help with respiration. Read the latest articles of CHEST at ScienceDirect.com, Elsevier’s leading platform of peer-reviewed scholarly literature However, what is the anatomic definition or meaning of a ‘chest’? The chest, properly called the thorax, is the superior part of the trunk located between the neck and abdomen. Define chest. chest synonyms, chest pronunciation, chest translation, English dictionary definition of chest. n. 1. a. The part of the body between the neck and the abdomen, enclosed by the ribs and the breastbone; the thorax. b. The front or ventral portion of this. Definition of chest noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.