👉 Subthoracic is a medical term used to describe an area in the thoracic cavity, typically located between the costal cartilage and the ribs. It includes the spaces beneath these structures, which are known as the subcostal space. The subthoracic region is crucial for various functions within the body, including respiratory function, blood circulation, and nerve transmission. It plays a significant role in regulating the heart rate, ensuring adequate oxygenation, and maintaining homeostasis during physical activity