Which of the Following Muscles Has Its Insertion on the Sternum

Question

Which of the following muscles has its insertion on the sternum?
A) internal oblique
B) external intercostal
C) rectus abdominis
D) internal intercostal
E) scalene

Accepted Answer

The rectus abdominis muscle has its insertion on the sternum via the xiphoid process. The internal oblique and internal intercostal muscles insert on the ribs, while the external intercostal muscle forms part of the intercostal spaces between the ribs. The scalene muscles insert on the cervical vertebrae.