Lung fissures and surface markings (dave's notes)

Question 1

List the fissures of the lungs

Answer 1

Oblique

Horizontal

Question 2

Where does the oblique fissure extend from?

Answer 2

From the surface of the hilum , dividing into upper and lower lobes

Question 3

Where does the horizontal fissure extend from? What variants of this exist?

Answer 3

In the right lung, passes form the anterior margin of the oblique fissure to separate a wedge shaped piece of the upper love out. May be incomplete or even absent.

Question 4

Describe the horizontal fissure on the left lung

Answer 4

On the left there is a corresponding fissure similar to that of the right lung, that separates out the lingula lobe - but this is never complete.

Question 5

What is the function of the oblique fissure?

Answer 5

The oblique fissure provides a slippery surface between the upper and lower parts, thus allowing these to move much more easily and expand more fully.

Question 6

What are the surface markings of the hill?

Answer 6

The hila lie approximately behind the 3rd and 4th costal cartilages at the sternal margin (T5,6,7)

Question 7

What are the anterior relations of the lungs with the parietal pleura?

Answer 7

Anteriorly the lungs lie closely with the pleura, more on the right than the left because of the heart.