intercostal muscles

Intercostal muscles are a group of muscles located between the ribs that play a crucial role in breathing. They help expand and contract the chest cavity by lifting the ribs during inhalation to allow the lungs to fill with air, and relaxing during exhalation to help push air out. These muscles come in two types: external intercostals, which assist in inhaling, and internal intercostals, which aid in exhaling. They work together seamlessly to support efficient respiration and protect the lungs and heart by maintaining the stability and structure of the chest wall.