3rd intercostal space starts from inferior portion of 3rd rib and ends at superior portion of 4th rib. The intercostal spaces are the spaces amongst the two bordering ribs and their costal cartilages. On each side 11 intercostal spaces are present. Contents Each space contains the following

5th Intercostal Spaces

5th intercostal space starts from inferior portion of 5th rib and ends at superior portion of 6th rib. The intercostal spaces are the spaces amongst the two bordering ribs and their costal cartilages. On each side 11 intercostal spaces are present. Contents Each space contains the following

4th Intercostal Space

4th intercostal space starts from inferior portion of 4th rib and ends at superior portion of 5th rib. The intercostal spaces are the spaces amongst the two bordering ribs and their costal cartilages. On each side 11 intercostal spaces are present. Contents Each space contains the following

Axillary Lines – Anterior, Midaxillary and Posterior

There are three axillary lines, anterior axillary line, midaxillary line and posterior axillary line. Whenever there is abduction of the arm from the body by 90 degrees, by the anterior axillary fold, through the middle of the axilla, as well as from the posterior axillary fold imaginary

2nd Intercostal Space

2nd intercostal space starts from inferior portion of 2nd rib and ends at superior portion of 3rd rib. The intercostal spaces are the spaces amongst the two bordering ribs and their costal cartilages. On each side 11 intercostal spaces are present. Contents Each space contains the following