Sternalis muscle
（重定向自Musculus sternalis）
![](/Images/godic/202501/28/Grant_1962_27b4918.png")
![The presence of the sternalis in sagittal plane on CT (left) and on volume rendered CT 3D reconstruction (right).](/Images/godic/202501/28/Musculus_sternalis_rechts_-_CT_sagittal_und_Volume_rendering_-_0014919.jpg")
![](/Images/godic/202501/28/PSM_V25_D748_Rectus_sternalis_and_the_great_pectoral_chest_muscle4919.jpg")
The sternalis muscle is an anatomical variation that lies in front of the sternal end of the pectoralis major parallel to the margin of the sternum. The sternalis muscle may be a variation of the pectoralis major or of the rectus abdominis. It is insufficiently mentioned in standard anatomy textbooks.