Right lower lobe
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The right lower lobe (RLL) is one of three lobes in the right lung. It is is separated from the right upper lobe posterosuperiorly superiorly and the middle lobe anteriorly by the right oblique fissure and the middle lobe anterosuperiorly by the horizontal fissure and segments segments.
Gross anatomy
Location and structure
The RLL lies in the posterior and lower aspect aspect of the right hemithorax and contains fivebronchopulmonary segments:
- superior segment
- anterior
segmentsegment - medial
segmentsegment - lateral segment
- posterior
segmentsegment
Like all the pulmonary lobes, it is lined byvisceral pleura which reflects at the pulmonary hilum where it is continuous with theparietal pleura. The right lower lobe bronchus arises as a direct continuation of thebronchus intermedius to traverse the the right hilum into the RUL.
The RLL is separated from theright upper lobe posterosuperiorly by superiorly and theright oblique fissure and the anterosuperiorly by anteriorly by the right oblique fissure.
Arterial supply
Like all the lobes of the lung, the RLL has dual arterial supply:
- deoxygenated blood from the right lower lobar pulmonary artery
- oxygenated blood from branches of the rightbronchial arteries
Venous drainage
Venous drainage of newly oxygenated blood is via the right inferiorpulmonary vein into the left atrium.
Right bronchial veins drain into theazygos vein.
Lymphatic drainage
The superficial subpleura lymphatic plexus drains the lung parenchyma and visceral pleura to the bronchopulmonary (hilar) lymph nodes in the hilum.
The deep bronchopulmonary lymphatic plexus (in the bronchial submucosa and peribronchial interstitium interstitium) drains the root of the lung to hilar lymph nodes in the hilum.
The hilar lymph nodes then drain to the tracheobronchial lymph nodes.
Innervation
- parasympathetic fibres from thevagus nerve (CN X)
- sympathetic fibres from the paravertebral sympathetic trunks
Related pathology
-<p>The <strong>right lower lobe (RLL)</strong> is one of three lobes in the <a href="/articles/right-lung">right lung</a>. It is separated from the <a href="/articles/right-upper-lobe">right upper lobe</a> posterosuperiorly by the <a href="/articles/oblique-fissure">right oblique fissure</a> and the <a href="/articles/right-middle-lobe">middle lobe</a> anterosuperiorly by the <a href="/articles/horizontal-fissure">horizontal fissure</a> and is subdivided into five <a href="/articles/bronchopulmonary-segments">bronchopulmonary segments</a>.</p><ul></ul><h4>Gross anatomy</h4><h5>Location and structure</h5><p>The RLL lies in the posterior and lower aspect of the right hemithorax and contains five <a href="/articles/bronchopulmonary-segmental-anatomy-1">bronchopulmonary segments</a>:</p><ul>- +<p>The <strong>right lower lobe (RLL)</strong> is one of three lobes in the <a href="/articles/right-lung">right lung</a>. It is separated from the <a href="/articles/right-upper-lobe">right upper lobe</a> superiorly and the <a href="/articles/right-middle-lobe">middle lobe</a> anteriorly by the <a href="/articles/oblique-fissure">right oblique fissure</a> and is subdivided into five <a href="/articles/bronchopulmonary-segments">bronchopulmonary segments</a>.</p><ul></ul><h4>Gross anatomy</h4><h5>Location and structure</h5><p>The RLL lies in the posterior and lower aspect of the right hemithorax and contains five <a href="/articles/bronchopulmonary-segmental-anatomy-1">bronchopulmonary segments</a>:</p><ul>
-<li><a href="/articles/right-lower-lobe-anterior-segment">anterior segment</a></li>-<li><a href="/articles/right-lower-lobe-medial-segment">medial segment</a></li>- +<li><a href="/articles/right-lower-lobe-anterior-segment">anterior segment</a></li>
- +<li><a href="/articles/right-lower-lobe-medial-segment">medial segment</a></li>
-<li><a href="/articles/right-lower-lobe-posterior-segment">posterior segment</a></li>-</ul><p>Like all the pulmonary lobes, it is lined by <a href="/articles/pleura">visceral pleura</a> which reflects at the pulmonary hilum where it is continuous with the <a href="/articles/pleura">parietal pleura</a>. The right lower lobe bronchus arises as a direct continuation of the <a href="/articles/bronchus-intermedius">bronchus intermedius</a> to traverse the right hilum into the RUL.</p><p>The RLL is separated from the <a href="/articles/right-upper-lobe">right upper lobe</a> posterosuperiorly by the <a href="/articles/oblique-fissure">right oblique fissure</a> and the <a href="/articles/right-middle-lobe">middle lobe</a> anterosuperiorly by the <a href="/articles/horizontal-fissure">horizontal fissure</a>.</p><h5>Arterial supply</h5><p>Like all the lobes of the lung, the RLL has dual arterial supply:</p><ul>-<li>deoxygenated blood from the right lower lobar<a href="/articles/missing"> pulmonary artery</a>- +<li><a href="/articles/right-lower-lobe-posterior-segment">posterior segment</a></li>
- +</ul><p>Like all the pulmonary lobes, it is lined by <a href="/articles/pleura">visceral pleura</a> which reflects at the pulmonary hilum where it is continuous with the <a href="/articles/pleura">parietal pleura</a>. The right lower lobe bronchus arises as a direct continuation of the <a href="/articles/bronchus-intermedius">bronchus intermedius</a> to traverse the right hilum into the RUL.</p><p>The RLL is separated from the <a href="/articles/right-upper-lobe">right upper lobe</a> superiorly and the <a href="/articles/right-middle-lobe">middle lobe</a> anteriorly by the <a href="/articles/oblique-fissure">right oblique fissure</a>.</p><h5>Arterial supply</h5><p>Like all the lobes of the lung, the RLL has dual arterial supply:</p><ul>
- +<li>deoxygenated blood from the right lower lobar<a href="/articles/peroneus-brevis-1"> pulmonary artery</a>
-<li>oxygenated blood from branches of the right <a href="/articles/bronchial-artery">bronchial arteries</a>- +<li>oxygenated blood from branches of the right <a href="/articles/bronchial-artery">bronchial arteries</a>
-</ul><h5>Venous drainage</h5><p>Venous drainage of newly oxygenated blood is via the right inferior <a href="/articles/pulmonary-veins">pulmonary vein</a> into the left atrium.</p><p>Right bronchial veins drain into the <a href="/articles/azygos-vein">azygos vein.</a></p><h5>Lymphatic drainage</h5><p>The superficial subpleura lymphatic plexus drains the lung parenchyma and visceral pleura to the bronchopulmonary (hilar) lymph nodes in the hilum.</p><p>The deep bronchopulmonary lymphatic plexus (in the bronchial submucosa and peribronchial interstitium) drains the root of the lung to hilar lymph nodes in the hilum.</p><p>The hilar lymph nodes then drain to the tracheobronchial lymph nodes.</p><h5>Innervation</h5><ul>-<li>parasympathetic fibres from the <a href="/articles/vagus-nerve">vagus nerve (CN X)</a>- +</ul><h5>Venous drainage</h5><p>Venous drainage of newly oxygenated blood is via the right inferior <a href="/articles/pulmonary-veins">pulmonary vein</a> into the left atrium.</p><p>Right bronchial veins drain into the <a href="/articles/azygos-vein">azygos vein.</a></p><h5>Lymphatic drainage</h5><p>The superficial subpleura lymphatic plexus drains the lung parenchyma and visceral pleura to the bronchopulmonary (hilar) lymph nodes in the hilum.</p><p>The deep bronchopulmonary lymphatic plexus (in the bronchial submucosa and peribronchial interstitium) drains the root of the lung to hilar lymph nodes in the hilum.</p><p>The hilar lymph nodes then drain to the tracheobronchial lymph nodes.</p><h5>Innervation</h5><ul>
- +<li>parasympathetic fibres from the <a href="/articles/vagus-nerve">vagus nerve (CN X)</a>
-<li>sympathetic fibres from the paravertebral <a href="/articles/missing">sympathetic trunks</a>- +<li>sympathetic fibres from the paravertebral <a href="/articles/peroneus-brevis-1">sympathetic trunks</a>
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