SEGMENT BRONCHUS Meaning and
Definition
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A segment bronchus, also known as a bronchopulmonary segment, is a primary division or branch of the bronchial tree in the lungs. It refers to the specific region of the lungs that is supplied by a segmental bronchus. The bronchial tree consists of a series of tubes that progressively divide and deliver air to the lungs. These tubes are called bronchi, and they originate from the trachea and further divide into bronchioles.
A segment bronchus is located within a designated region of the lungs and serves as the main air pathway to that segment. Each lung is divided into different segments, typically ranging from eight to twelve, depending on the lung. These segments are autonomous and are separated from each other by connective tissue partitions, making them functionally independent.
Segment bronchi are instrumental in facilitating the exchange of oxygen and carbon dioxide within the lungs. They supply air to specific areas or regions of the lung, allowing for efficient respiration. The segmental bronchi progressively branch into smaller tubes called bronchioles, which eventually lead to the final destination of oxygen exchange, the alveoli.
Understanding the anatomical division of segment bronchi is crucial in the diagnosis and treatment of lung-related diseases or conditions. They help in identifying precise areas of lung infections, tumors, or other abnormalities. Additionally, surgeries or interventions can be performed on specific segments without affecting the surrounding areas, thanks to the segmental bronchi's distinct nature.
Etymology of SEGMENT BRONCHUS
The word "segment bronchus" is formed by combining two separate terms: "segment" and "bronchus".
The term "segment" originates from the Latin word "segmentum", which means a piece or a part. In anatomy, it refers to a division or section of an organ, such as the lung.
The term "bronchus" is derived from the Greek word "bronchos", meaning windpipe or throat. In anatomy, it refers to the large airway that connects the trachea to the lungs and branches out into smaller bronchi.
Therefore, when combined, "segment bronchus" refers to a specific division or section of the bronchial tree within the lungs.
