Intercostal muscles

Definition

Intercostal muscles are groups of muscles found between the ribs that help form and move the chest wall. They are primarily involved in the mechanical aspect of breathing, assisting with the expansion and contraction of the thoracic cavity to facilitate respiration.

Related terms

Thoracic Cavity: The part of the body enclosed by the ribs, sternum, and vertebral column, containing vital organs such as the lungs and heart.

Diaphragm: A dome-shaped muscular partition separating the thorax from the abdominal cavity, playing a major role in breathing by contracting and flattening to enlarge the thoracic cavity.

Respiration: The process of inhaling oxygen into the lungs and exhaling carbon dioxide out, facilitated by movements of respiratory muscles including intercostal muscles and diaphragm