Primary bronchus

Primary Bronchus

The Primary Bronchus (also known as the main bronchus) is a major part of the respiratory system. It is the first part of the bronchial tree and serves as the main passage for air into the lungs.

Anatomy

Each primary bronchus is connected to a lung, with the right primary bronchus leading to the right lung and the left primary bronchus leading to the left lung. The primary bronchi are asymmetrical, with the right bronchus being wider, shorter, and more vertical than the left. This anatomical difference has clinical significance as it makes the right bronchus more prone to foreign body aspiration.

Function

The primary function of the primary bronchus is to carry air from the trachea into the lungs. The bronchi are lined with ciliated epithelium, which helps to move mucus and trapped particles out of the lungs, aiding in the body's defense against infection.

Clinical Significance

Conditions that can affect the primary bronchus include bronchitis, bronchial carcinoma, and bronchial asthma. These conditions can lead to symptoms such as coughing, wheezing, shortness of breath, and chest discomfort.

See Also

• Bronchial tree
• Respiratory system
• Lungs
• Bronchitis
• Bronchial carcinoma
• Bronchial asthma