👉 The term "thoraciform" refers to a group of organs located in the chest, particularly within the upper third of the lung. These include the heart (atrium), tricuspid valve, and valves of the right and left lungs (ventricles). The thoracic cavity is divided into two main sections: the diaphragm, which acts as a protective dome around the chest, and the costal cartilage, which provides support for the ribs.