What does the term intercostal refer to?

The term intercostal specifically refers to the space or structures located between the ribs. In anatomy, "inter" means "between," and "costal" derives from the Latin word "costa," which means "rib." Therefore, the intercostal muscles and nerves are those located between the individual ribs, playing an important role in the mechanics of breathing by facilitating the expansion and contraction of the thoracic cavity. Understanding this term is crucial for clinical assessments and interventions related to respiratory function, as the intercostal spaces are significant in procedures such as chest tube placements or assessing thoracic injuries.