Surface Markings Flashcards
What does the parietal pleura of the lungs adhere to?
Thoracic wall, mediastinum, diaphragm
Why do we use surface markings?
Allow us to identify position, shape, and extent (surface projection) of the lungs and pleural cavity
What are the four parts of the parietal pleura and where do they lie?
Costal part
Mediastinal
Diaphragmatic
Cervical
What are pleura reflections?
Sharp lines where pleura change direction from one wall of the pleural cavity to the other
Where can you locate the apex of the lungs and the pleural cavity?
About 3 cm above medial third of the clavicle
What articulates with the sternum at the level of the sternal angle?
Second costal cartilage
What is the inferior part of the pleural cavity not occupied by lung called?
Costdiaphragmatic recess
At which rib levels do both sides of the pleural lining meet in the midline?
Ribs 2-4
Costal cartilage 2 can be identified by the sternal angle
At which rib level does the left pleural cavity deviate sharply laterally?
4-6
Where do the pleural linings cross the mid-clavicular line, the mid axillary line and the scapular line?
Mid-clavicular - rib 8
Mid axillary - rib 10
Scapular - rib 12
Where does the lower margin of the lung cross the mid-clavicular line, the mid-axillary line and the scapular line?
Mid-clavicular - rib 6
Mid-axillary - rib 8
Scapular - rib 10
What does the oblique fissure separate and which lung is it seen in?
In the left lung - upper from lower lobe
In the right lung - upper and middle from the lower
What does the horizontal fissure separate and which lung is it seen in?
In the right lung
Upper lobe from middle lobe
Where can the oblique fissure be seen?
Extends from spinous process of T2 posteriorly to 6th costal cartilage anteriorly
Where can the horizontal fissure be seen?
Extends from the fourth rib in the mid-axillary line to anterior edge of the lung on the right hand side
