Lung of Anatomy

Anatomy

1. In the name of God

3. •Soft, spongy & elastic structure in thoracic cavity.
•Lie on each side of the mediastinum .
•Each lung is conical covered with visceral pleura.

4. •Apices-extend 1-2 cm past
clavicles
•At end-expiration
–6
th
rib – midclavicular
–8
th
rib – laterally
•Posteriorly
–Tops is at 1
st
vertebra
•Inferior border
–Rises & falls betwee 9
th
&
12
th
rib

5. External Features
apex
base
Surfaces
Costal surface
Mediastinal surface
Borders
Anterior border
Posterior border

6. Lobes & Fissures

Right Lung
Is slightly larger than
the left & is divide by
the oblique &
horizontal fissure into 3
lobes the upper, middle
& lower lobes

7. Right Lung Root
2 bronchi lie posterior.
Pulmonary artery is
superior
2 Pulmonary veins are
inferior and anterior.

8. Left Lung
Divided by similar
oblique fissure into 2
upper & lower lobes
Cardiac notch

9. Left Lung Root
One bronchi lie posterior.
Pulmonary artery is
superior .
2 pulmonary veins are
inferior and anterior.

10. Blood supply
The bronchi, CT of the lung & visceral pleura is
supplied by bronchial arteries branches of thoracic
aorta .
The bronchial vein drain into the azygos &
hemiazygos veins .
Two pulmonary veins leave each lung root to empty
into the left atrium .

11. Nerve supply
Pulmonary plexus composed of
autonomic nerve fibers of sympathetic
& parasympathetic (Vagus) both

12. Lymph Drainage
Two sets are present
Superficial
Drains the surface of the lungs
Deep
Drains bronchial tree, pulmonary vessels & CT.
Lymph drain into bronchomediastinal trunk & finally
to thoracic duct, right lymphatic duct or
brachiocephalic veins