What does the term intercostal refer to?

The term "intercostal" specifically refers to the space or structures located between the ribs. This anatomical term is derived from "inter," meaning between, and "costal," which pertains to the ribs. Intercostal muscles, for instance, are important in the process of respiration as they enable the expansion and contraction of the rib cage during breathing.

The correct answer highlights the essential location of these structures in relation to the ribs, underscoring their critical role in respiratory mechanics. This precise definition is key for healthcare professionals, especially in fields like nursing and surgery, where a strong grasp of anatomy is necessary for effective patient care and procedures.