Lung hilum
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The lung hilum or roots are found on the medial aspect of each lung. The left and right lung roots are similar but not identical.
Gross anatomy
Left Hilum
In the left hilum the left pulmonary artery occupies the upper part. Below this is the left bronchus. There are two pulmonary veins, one lies in front, and the other lies below the left bronchus.
Right Hilum
In the right hilum the bronchus of the upper lobe and the branch of the pulmonary artery to the upper lobe originate prior to entering the hilum. Thus, the upper lobe bronchus and artery are found above the level of the main bronchus and pulmonary artery. The arteries lie in front of their respective bronchi. The two pulmonary veins are similar to that of the left side, one in front and one below the main bronchus.
The structures of the lung hilum are enclosed in a sleeve of pleura continuous below with the pulmonary ligament.
In addition to the structures described above, each root contains bronchial vessels, autonomic nerves and lymph nodes and channels.
-<p>The <a title="lung" href="/articles/lung">lung</a> <strong>hilum</strong> or <strong>roots</strong> are found on the medial aspect of each lung. The left and right lung roots are similar but not identical.</p><h4>Gross anatomy</h4><h5>Left Hilum</h5><p>In the left hilum the left <a title="pulmonary artery" href="/articles/pulmonary-artery">pulmonary artery</a> occupies the upper part. Below this is the left bronchus. There are two <a title="Pulmonary veins" href="/articles/pulmonary-veins">pulmonary veins</a>, one lies in front, and the other lies below the left bronchus.</p><h5>Right Hilum</h5><p>In the right hilum the bronchus of the upper lobe and the branch of the pulmonary artery to the upper lobe originate prior to entering the hilum. Thus, the upper lobe bronchus and artery are found above the level of the main bronchus and pulmonary artery. The arteries lie in front of their respective bronchi. The two pulmonary veins are similar to that of the left side, one in front and one below the main bronchus.</p><p>The structures of the lung hilum are enclosed in a sleeve of pleura continuous below with the <a title="Inferior pulmonary ligament" href="/articles/inferior-pulmonary-ligament">pulmonary ligament</a>.</p><p>In addition to the structures described above, each root contains bronchial vessels, autonomic nerves and lymph nodes and channels.</p>- +<p>The <strong>lung</strong> <strong>hilum</strong> or <strong>roots</strong> are found on the medial aspect of each <a href="/articles/lung">lung</a>. The left and right lung roots are similar but not identical.</p><h4>Gross anatomy</h4><h5>Left Hilum</h5><p>In the left hilum the left <a href="/articles/pulmonary-artery">pulmonary artery</a> occupies the upper part. Below this is the left bronchus. There are two <a href="/articles/pulmonary-veins">pulmonary veins</a>, one lies in front, and the other lies below the left bronchus.</p><h5>Right Hilum</h5><p>In the right hilum the bronchus of the upper lobe and the branch of the pulmonary artery to the upper lobe originate prior to entering the hilum. Thus, the upper lobe bronchus and artery are found above the level of the main bronchus and pulmonary artery. The arteries lie in front of their respective bronchi. The two pulmonary veins are similar to that of the left side, one in front and one below the main bronchus.</p><p>The structures of the lung hilum are enclosed in a sleeve of pleura continuous below with the <a href="/articles/inferior-pulmonary-ligament">pulmonary ligament</a>.</p><p>In addition to the structures described above, each root contains bronchial vessels, autonomic nerves and lymph nodes and channels.</p>
References changed:
Tags changed:
- hilum
Sections changed:
- Anatomy
Systems changed:
- Chest
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