What is the name of the lung that has a cardiac notch?

The left lung features a cardiac notch, a precise anatomical indentation that accommodates the shape of the heart. This notch allows space for the heart to sit slightly left of the midline in the thoracic cavity. The left lung is slightly smaller than the right lung, reflecting the need to provide room for the heart's positioning. This anatomical feature highlights the relationship between the organs within the thoracic cavity, specifically the lungs and heart, and is an important detail in understanding respiratory and cardiovascular anatomy.