1. Lungs
Dr. Hassan Shaibah

2. Lungs
lie in the thorax.
Sits on the diaphragm

3. projected upwards in the neck.
Apex
projected upwards in the neck.
Conical shape
base
sits on the diaphragm.

4. concave
base

5. medial or mediastinal (concave)
Lungs
has 2 surfaces
medial or mediastinal (concave)
lateral or costal
(convex).

6. has 3 borders
posterior
(rounded)
anterior & inferior
(sharp)

7. Difference between the lungs
Right lung
Left lung
length
Shorter.
Longer.
width
Wider.
Narrower.
lobes
3 (upper, middle and lower).
2 (upper and lower).
fissures
oblique,horizontal.
Oblique.
cardiac notch
absent.
present.
Lingula

8. Right lung Left lung Shorter. Longer Wider. Narrower. 3 lobes 2 lobes
(upper, middle and lower).
2 fissures
oblique,horizontal.
Left lung
Longer
Narrower.
2 lobes
(upper and lower).
1 fissure Oblique.

9. Difference between the lungs
upper
upper
middle
lower
lower

10. Difference between the lungs
horizontal.
Oblique
fissure

11. Mediastinal surface of the right lung

12. Mediastinal surface of the left lung

13. Root (hilum) of the right lung
1- bronchi
2- pulmonary artery (in front of the bronchus)
3- superior pulmonar vein (most anterior)
4- inferior pulmonary vein (most inferior) 1 2 3 4

14. Root (hilum) of the left lung
1- bronchus (most posterior)
2- pulmonary artery (most superior)
3- superior pulmonar vein (most anterior)
4- inferior pulmonary vein (most inferior) 2 1 4 3

15. Nerve supply of the lungs
By the pulmonary plexus in the root of each lung.
The plexus has sympathetic (sympathetic trunk) and parasympathetic (vagus) nerves.

16. Blood supply of the lungs
Arterial supply
Venous drainage
Bronchi, lung tissue.
Bronchial arteries from descending aorta.
Bronchial veins to the azygos and hemiazygos veins.
Alveoli.
Pulmonary arteries
Pulmonary veins.

27. Bronchpulmonary segments
Each lobar bronchus gives smaller branches. Each branch with a lung unit form a broncho-pulmonary segment.
Each segment has its own nerve, blood and lymph.

28. Bronchpulmonary segments

30. Bronchpulmonary segments
Inside each segment, the branches divide into smaller bronchioles ending in air sacs where gas exchange occurs.
A diseased segment can be removed surgically leaving the remaining lung tissue.

32. Bronchpulmonary segments
Right lung
Left lung
Upper lobe
Apical, anterior, posterior, superior lingular and inferior lingular.
Lower lobe
Apical, anterior basal, posterior basal, medial basal and lateral basal.
Upper lobe
Apical, anterior and posterior.
Middle lobe
Medial and lateral.
Lower lobe
Apical, anterior basal, posterior basal, medial basal and lateral basal.