Right lung
5141448
219415372
2008-06-15T03:06:10Z
CyclePat
460922
/* Additional images */ fix image. Replaced with one that doesn't require references. (which are missing within this article if we wanted to have this previous image)
{{main|Lung}}
{{Infobox Anatomy |
Name = {{PAGENAME}} |
Latin = pulmo dexter |
GraySubject = 240 |
GrayPage = 1096 |
Image = Gray972.png |
Caption = Mediastinal surface of right lung. |
Image2 = Illu quiz lung02.jpg |
Caption2 = 1. [[Anterior border of lung|Anterior border]]<BR>2. [[Mediastinal surface of lung|Mediastinal part]]<BR>3. [[Medial surface]]<BR>4. [[Inferior lobe]]<BR>5. [[Base of lung]] |
System = |
Precursor = |
MeshName = |
MeshNumber = |
DorlandsPre = |
DorlandsSuf = |
}}
The '''Right lung''' is divided into three lobes, (as opposed to two lobes on the left) superior, middle, and inferior, by two interlobular fissures:
==Fissures==
* One of these, the [[oblique fissure]], separates the inferior from the middle and superior lobes, and corresponds closely with the fissure in the [[left lung]]. Its direction is, however, more vertical, and it cuts the lower border about 7.5 cm. behind its anterior extremity.
* The other fissure, the [[horizontal fissure of right lung|horizontal fissure]], separates the superior from the middle lobe. It begins in the previous fissure near the [[posterior border of the lung]], and, running horizontally forward, cuts the [[Anterior border of lung|anterior border]] on a level with the [[sternal]] end of the fourth [[costal cartilage]]; on the [[mediastinal surface]] it may be traced backward to the [[hilus]].
==Lobes==
The middle lobe, the smallest lobe of the right lung, is wedge-shaped, and includes the lower part of the anterior border and the anterior part of the [[base of the lung]]. (There is no middle lobe on the [[left lung]], though there is a [[lingula of left lung|lingula]].)
The superior and inferior lobes are similar to their counterparts on the [[left lung]].
==Difference in size==
The right lung, although shorter by 5 cm. than the left, in consequence of the [[Thoracic diaphragm|diaphragm]] rising higher on the right side to accommodate the [[liver]], is broader, owing to the inclination of the heart to the left side. Consequently, the volume, the total capacity and the weight of the right lung is higher than in the left.
==Impressions==
On the mediastinal surface, immediately above the hilus, is an arched furrow which accommodates the [[azygos vein]]; while running upward, and then arching lateralward some little distance below the apex, is a wide groove for the [[superior vena cava]] and right [[innominate vein]]; behind this, and nearer the apex, is a furrow for the [[innominate artery]].
Behind the hilus and the attachment of the [[pulmonary ligament]] is a vertical groove for the [[esophagus]]; this groove becomes less distinct below, owing to the inclination of the lower part of the esophagus to the left of the middle line.
In front and to the right of the lower part of the esophageal groove is a deep concavity for the extrapericardiac portion of the thoracic part of the [[inferior vena cava]].
==Additional images==
<gallery>
Image:Respiratory system complete numbered.svg|Diagram of the respiratory system
Image:Lungs anatomy.png|Anatomy of lungs
Image:Gray490.png|Front view of heart and lungs
Image:Gray503.png|Transverse section of thorax, showing relations of pulmonary artery
Image:Gray1032.png|The position and relation of the esophagus in the cervical region and in the posterior mediastinum, seen from behind
Image:Gray1178.png|The thymus of a full-time fetus, exposed in situ
</gallery>
==See also==
* [[Left lung]]
==External links==
* [http://rad.usuhs.edu/medpix/medpix.html?mode=single&recnum=7747#top Lung Lobes]
* {{Chorus|00458}}
* {{SUNYAnatomyFigs|19|05|01}} - "Mediastinal surface of the right lung."
* [http://training.seer.cancer.gov/ss_module03_lung/unit02_sec05_quiz_match02.html Diagram and quiz at cancer.gov]
* {{RocheLexicon|02101.002-1}}
* [http://www.univie.ac.at/anatomie2/pembody/body6b-text.html Cross section at univie.ac.at]
{{Gray's}}
{{Lung}}
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[[Category:Organs]]
[[Category:Respiratory system]]
[[Category:Thorax]]
[[Category:Cardiovascular system]]
[[nl:Rechter long]]