Transcript
Lungs &
Bronchopulmonary Segments
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Lungs in situ
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Borders & Surfaces
Apex
Base or inferior surface
3 Borders: Anterior Posterior
Inferior
2 surfaces: Costal Medial Vertebral Mediastinal
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Cardiac notch
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Fissure & lobes of lung
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Fissure & lobes of Rt lung
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Fissure & lobes of Lt lung
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Mediastinal surface: Rt Lung
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Mediastinal surface: Rt Lung
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Mediastinal surface: Rt LungMediastinal surface: Rt Lung
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Mediastinal surface: Lt lung
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Mediastinal surface: Lt lung
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Mediastinal surface: Lt lungMediastinal surface: Lt lung
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Mediastinal surfaces of lungs
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Hilum of lung
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Root of lung
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Areolar tissue
Bronchial vessels
Pulm plexus
Roots of lungs
BP nodes
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Structures at Hilum of lung
Both lungs ( ant to post) pulm vein pulm artery bronchus
Rt lung (sup to inf) Lt lung (sup to inf)
eparterial bronchus pulm artery pulm artery principal bronchus hyparterial bronchus pulm vein pulm vein
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Right lung Left lung
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bronchus
bronchusTrachea
Bronchial Tree
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Trachea Principal bronchus/primary
Lobar bronchus/sec
Segmental bronchus/tertiary (10 in each)
Bronchus div till cartilage is absent & lumen 1mm/< - BRONCHIOLE
Terminal Bronchiole(conducting portion ends)
Respiratory bronchiole (respiratory portion begins)
Bronchial Tree
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Lobar
Segmental
Bronchus
Terminal bronchiole
Respiratory bronchiole
Alveolar ducts
Atrium
Alveolar Sac
Alveolus
Many divisions
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Bronchopulmonary segments
Well defined sectors of lung
Pyramidal, apex towards hilum
10 in each
contains – segmental bronchus pulm & bronchial artery branch pulm vein is intersegmental
independent bronchopulmonary unit but not individual bronchovascular unit
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Intersegmental course of pulmonary vein
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Bronchopulmonary segments: Ant view
R L
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Bronchopulmonary Segments- post view
L R
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Rt lung Lt lung
1. Apical 1. Apical Apicoposterior2. Post UPPER LOBE 2. Post3. Ant 3. Ant
4. Lateral 4. Sup. Lingular5. Medial MIDDLE/ LINGULAR 5. Inf. Lingular
6. Apical 6. Apical7. Medial basal 7. Medial basal8. Ant basal LOWER LOBE 8. Ant basal9. Lat basal 9. Lat. Basal10. Post basal 10. Post. basal
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Blood supply:• Arterial – bronchial A
Rt side - one – branch of 3rd post intercostal Artery
Lt side – two– branch of dsc thoracic aorta • Venous Rt side -- two bronchial veins – drains into Azygos V
Lt side --two bronchial veins – drains into Hemizygos
Mainly lungs drained by Pulm veins - sup & inf.
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Bronchial Arteries
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Lymphatic drainage
Superficial – BP nodes Tracheobronchial nodes (hilum) (tracheal bifurcation)
Deep – Pulm L nodes BP nodes TB nodes
Alveoli has no lymphatics around them
Rt subclavian trunk & Lt thoracic duct
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Nerve supply
Ant & post pulm plexus PS – vagal fibres motor to bronchial muscles & glands; sensory
Symp – T2-T5 spinal segments
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Applied aspects Segmentectomy – bronchiectesis, lung abscess, benign tumours
Bronchoscopy & removal of foreign body
Postural drainage – lung abscess
TB lung
Bronchiectasis (chronic dilatation of bronchi with sec infection) Emphysema (distal to terminal bronchioles distension with destructive changes in their walls)
Lung carcinoma
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BRONCHOSCOPY
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Bronchiectasis
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TUBERCULOSIS LUNG
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