Muscle Serratus Posterior Inferior

The serratus inferior posterior muscle (lat. Musculus serratus inferior posterior) is a muscle located in the back of the body, which is involved in the movement of the back. It helps stabilize the spine and maintains its correct shape.

The muscle consists of two parts: the serratus muscle and the longus dorsi muscle. The serratus muscle is the main part of the muscle and is shaped like a tooth, which explains its name. It starts from the spine and ends at the costal arch. The longus dorsi muscle starts from the spinal column and ends on the chest.

The function of the serratus posterior inferior muscle is to maintain the correct shape of the spine and stabilize its position. It is also involved in movements that require flexibility and mobility of the spine, such as bending forward or backward.

In addition, the serratus posterior inferior muscle plays an important role in breathing. It is involved in the expansion of the chest and helps air pass through the lungs. This allows us to breathe deeper and more efficiently.

Overall, the serratus posterior inferior muscle is an important muscle for our body. It provides stability to the spine and is involved in many important functions such as breathing and movement.



The serratus inferior posterior muscle is a solid, flat and barrel-shaped muscle of the human back, consisting of superficial, deep and middle layers. It has a large number of muscle fiber bundles and can expand laterally. This muscle creates three layers. The deepest one is called the serratus layer, and the top two layers are the superficial layer and the deep layer.

Anatomical function. The muscle helps us lift or straighten the torso at the same time in the thoracic or lumbar spine. It has powerful strength due to the depth of the muscle fibers. Moreover, the deeper the tissue is located, the more active it is in