Costal groove

Definition

The costal groove is an indented line found on the inner surface of each rib, running along the bottom edge. It serves as a pathway for the intercostal nerves and blood vessels to lie protected between the ribs.

Related terms

Ribs:

Curved bones that form part of the thoracic cage and protect thoracic organs.

Intercostal nerves: Nerves that run between the ribs and are responsible for sending signals to the chest wall muscles and upper abdomen.

Thoracic cage: The skeletal structure made up of the ribs, sternum, and thoracic vertebrae that encloses and protects the heart and lungs