heart/lungs Flashcards
Upper limit of heart
Lower border of left 2nd costal cartilage, 3cms left of the midline.
Upper border of right 3rd costal cartilage, 3cms right of the midline.
Lower limit of heart
Lower border of right 6th costal cartilage, 3 cms right of the midline.
5th left intercostal space, 9 cms left of the midline.
Left lung anterior border
It runs downwards and medially to 4th chondro-sternal junction. It then runs laterally for 2.5cms along the border of the 4th costal cartilage. It then runs downwards and medially to cut the 6th costal cartilage, where it ends
Left lung inferior border
From the 6th costal cartilage, it runs downwards and laterally to the 8th rib, in the mid-axillary line. It then runs left and slightly upwards to cut the 10th rib in line with the inferior angle of the scapula. It then continues medially to about 1.75cms lateral to the spinous process of T10. This border lies at a slightly lower level on the left side.
Left lung posterior border
From its position 1.75cms lateral to the spinous process of T10, it runs vertically upwards to the level of C7, where it reaches the apex.
Horizontal fissure of right lung
From the costal cartilage of the 4th rib, crosses 5th rib at the mid axillary line to join the oblique fissure
Oblique fissure of right lung
From T4 posterior, moves down and lateral, crosses 5th intercostal space at mid axillary line and continues along contour of 6th rib.
Right lung anterior border
Runs downwards and medially to the 6th or 7th chondro-sternal junction.
right lung inferior border
From the 6th or 7th chondro-sternal junction, runs downwards and laterally to the 8th rib, in the mid-axillary line. It then runs left and slightly upwards to cut the 10th rib in line with the inferior angle of the scapula. It then continues medially to about 1.75cms lateral to the spinous process of T10.
right lung posterior border
From its position 1.75cms lateral to the spinous process of T10, it runs vertically upwards to the level of C7, where it reaches the apex.
