Lungs: Impressions, Pulmonary Tree, Pleura, Fissures

Describe the Left Lung *

2 lobes, has lingula *

-has arterial impressions *

-left hilum from superior to inferior: pulmnary artery, bronchos & pulmonary vein (S—>I)**

-has lingula on left upper lobe (homolog to R. Middle lobe): contains cardiac notch also on upper left lobe *

What is the Hilum of the L Lung? *

Pulmonary artery, bronchus & pulmonary vein (S—>I) **

Describe Right Lung

3 lobes: 2 fissures *

-has venous impressions * (e.g. azygous vein)

-Right Hilum from superior to inferior: Bronchus & pulmonary artery are both most superior, pulmonary vein is most inferior

P.A.= deoxygenated *

P.V.= oxygenated *

Where dos the trachea begin & end (bifurcates)?

Begins @ C6

Ends @ T4

Cartilage stops where in the trachea?

Cartilage stops @ secondary bronchus

No cartilage in the tertiary bronchi

How many lobes & fissures are in the left & right lung?

Left lung= 2 lobes & 1 fissure

Right lung= 3 lobes & 2 fissures

How many bronchopulmonary segments are in left & right lung? **

Left lung= 8 segments **

Right lung= 10 segments **

Fluid in the lungs will accumulate where in the lungs? **

Costodiaphragmatic recess **

What is the figure in the left lung?

Oblique only (separates superior lobe from inferior lobe)

What is the fissures in the right lung?

Horizontal (@ 4th rib anteriorly & T6 posteriorly)

Oblique (separates middle lobe from inferior lobe)

What is the 2 types of pleura in the lungs?

1. Visceral

2. Parietal

The parietal pleura in the lung is divided into... *

1. Mediastinal pleura: pulmonary ligament- from Mediastinal pleura & is located inferior to root of lung

2. Diaphragmatic pleura

3. Costal pleura (ribs)

4. Cervical pleura (cupola= apex of cervical pleura, above the clavicle) *