It is located in the left side of the torax
A knife wound to the left side of the thorax can cause a collapsed lung, also known as a pneumothorax, because air leaks into the space between the lung and the chest wall, preventing the lung from fully expanding. This can lead to decreased oxygen intake and difficulty breathing. Immediate medical attention is crucial to address this condition.
in the left part of the thorax
Black lung, as the name suggests, is a disease of the lungs. The lungs are located within the chest (or in more technical terms, the thorax).
Left pulmonary artery
Middle part is the thorax.
Lung and spleen
The right lung is larger and heavier. The right lung has three lobes, the left only two.
The uppermost point, hence apex...of the lung
The left lung is slightly smaller than the right lung because 2/3 of the heart is located there. The left lung contains the cardiac notch, an indentation in the lung that surrounds the apex (pointed end) of the heart. The smaller left lung only has 2 lobes, the superior and inferior.
The right lung has 3 lobes. This is in contrast to the left lung, which only has 2 in order to make room for the heart, which is located in the left side of the chest cavity.
I will assume you mean the organ that makes the left lung slightly smaller than the right and causes the apparent dent in the medial side. This organ is the heart. The reason the heart only causes the space in the left lung is that the left ventricle is far larger than the right and protrudes into the space where the lung would otherwise grow. This is the reason that people mistakenly think the heart is in the left of the chest. In reality it sits directly behind the sternum (very center of the thorax) and only the left ventricle sticks over to the left.
It is located inside your rib cage,Protected by rib bones.