It is a flat, flat and odd bone. It is an important hematopoietic bone.
It has 3 parts:
External or Pectoral
Internal or Pleural
Concave and Lisa
Right and Left Clavicular Notches
It has a costal notch for the 1st costal cartilage and 1/2 for the 2nd
Articulates with the body
Sternal Angle & #8211; between the Manubrium and the Body
Outer Face: Anterior or Pectoral (flat)
Internal Face: Posterior or Pleural (Concave)
Upper Edge: Articulates with the manubrium
Bottom Edge: Articulates as xiphoid process
Side Edge: 1/2 costal notch for 2nd costal cartilage and costal notches for 3rd to 7th costal cartilage
It is thin and elongated. It is the smallest of the three portions.
Xiphoid process foramen
THE Sternum hinges with the Clavicles and Cartilage of the Seven (7) First Ribs.
|STERNAL & #8211; PREVIOUS AND SIDE VIEW
|Source: SOBOTTA, Johannes. Atlas of Human Anatomy. 21st. Rio de Janeiro: Guanabara Koogan, 2000.|