شعبة هوائية

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Respiratory system complete.jpg
Conducting passages.
Gray961.png
منظر أمامي لغضاريف الحنجرة والقصبة الهوائية والشعب الهوائية.
Details
System التنفسي
Artery الشريان الشعبي
Vein الوريد الشعبي
Nerve pulmonary branches of vagus nerve
Identifiers
MeSH A04.411.125
Dorlands
/Elsevier
b_23/12198294
TA خطأ لوا في وحدة:Wikidata على السطر 744: attempt to index field 'wikibase' (a nil value).
TH {{#property:P1694}}
TE {{#property:P1693}}
FMA FMA:{{#property:P1402}}
Anatomical terminology
[[[d:خطأ لوا في وحدة:Wikidata على السطر 863: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]]

الشعبة الهوائية bronchus (وتثنيتها: الشعبتان الهوائيتان bronchi, والصفة منها: شـُعـَبي bronchial) هي a caliber of airway في المسار التنفسي الذي يمرر الهواء إلى الرئتين.[1] ولا يحادث تبادل غازات في هذا الجزء من الرئتين.

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التشريح

القصبة الهوائية تتفرع إلى شعبتين رئيسيتين (also mainstem bronchi), the left and the right, at the level of the sternal angle. The right main bronchus is wider, shorter, and more vertical than the left main bronchus. The right main bronchus subdivides into three segmental bronchi while the left main bronchus divides into two. The lobar bronchi divide into tertiary bronchi. Each of the segmental bronchi supplies a bronchopulmonary segment. A bronchopulmonary segment is a division of a lung that is separated from the rest of the lung by a connective tissue septum. This property allows a bronchopulmonary segment to be surgically removed without affecting other segments. There are ten segments per lung, but due to anatomic development, several segmental bronchi in the left lung fuse, giving rise to eight. The segmental bronchi divide into many primary bronchioles which divide into terminal bronchioles, each of which then gives rise to several respiratory bronchioles, which go on to divide into 2 to 11 alveolar ducts. There are 5 or 6 alveolar sacs associated with each alveolar duct. The alveolus is the basic anatomical unit of gas exchange in the lung.


صور اضافية

cross sectional cut of a human secondary bronchus

المصادر

  • Moore, Keith L. and Arthur F. Dalley. Clinically Oriented Anatomy, 4th ed. (1999). ISBN 0-7817-5936-6
  1. ^ Maton, Anthea (1993). Human Biology and Health. Englewood Cliffs, New Jersey, USA: Prentice Hall. ISBN  0-13-981176-1 . Unknown parameter |coauthors= ignored (|author= suggested) (help)