What term is used to refer to the space between the ribs?

The term "intercostal space" specifically refers to the anatomical area located between adjacent ribs. In this space, several important structures, including muscles, nerves, and blood vessels, are situated. The intercostal muscles, which play a crucial role in the mechanics of breathing, are found within these spaces, aiding in the expansion and contraction of the thoracic cavity.

In contrast, the other terms presented do not accurately describe this specific anatomical feature. "Costal space" might intuitively suggest a relationship to the ribs, but it is not a recognized term in anatomical terminology. "Transcostal space" and "intracostal space" lack established definitions in the context of human anatomy. Therefore, the recognized term for the space between the ribs is "intercostal space," making it the correct answer.