Horizontal section

Horizontal fissure (also known as transverse fissure) is a significant anatomical structure found in the human lung. It is a physical division that separates the lobes of the lung, specifically in the right lung.

Anatomy

The horizontal fissure is unique to the right lung, which is divided into three lobes: the superior, middle, and inferior lobes. The horizontal fissure separates the superior lobe from the middle lobe. It extends from the anterior aspect of the lung, near the sternum, to the hilum of the lung, the area where the bronchi, blood vessels, and nerves enter and exit the lung.

Clinical Significance

The presence and position of the horizontal fissure can be important in medical imaging, such as CT scans and X-rays, as it can help identify abnormalities or diseases within the lung. Conditions such as pneumonia, lung cancer, and pulmonary edema can cause changes in the appearance of the horizontal fissure.

See Also

• Lung
• Lobes of the lung
• Oblique fissure
• Pulmonary anatomy