Muscle that straightens the trunk (M. Erector Spinae, Pna)

The muscle tissue that goes directly to the spine (lat. Musculus Erecttor Spinae) is one of the most important muscles that holds the spine in an upright position. It plays an important role in maintaining posture and helps prevent spinal diseases such as scoliosis, lordosis and kyphosis. In this article we will talk about the anatomical structure of muscle tissue, its functions and role in the life of the body.

Muscle

Muscle tissue is fibrous tissue that is made up of muscle fibers and connective tissue. It is found in the deep layers of the skin and under the layer of muscle along the spine. Muscles have very different structures and functions, depending on their location in the body. Strong muscles that provide movement and smaller muscles, such as the muscle located between the vertebrae, support and move the body. Some muscles also perform gripping functions, such as the extrinsic facial muscles.

Muscle function

The main function of a muscle is to contract and enhance movement. Movement begins with a contraction of the muscle cell, which leads to relaxation and then contraction again. This continues until the muscle reaches its target. Thus, muscles help a person move and perform various actions. They play an important role in regulating posture, so that a person can maintain good posture and avoid developing spinal curvatures. In addition, muscles can protect the body from injury, as they can reduce the impact of a fall or collision.

Muscle structure

The basic structure of muscle is the muscle fiber, which is made up of tissue containing proteins called myofibrils. These fibers intertwine and form muscle tissue. Each muscle has many muscle bundles, each of which has one fiber. In general, muscle consists of a large number of myocytes (muscle cells) and connective tissues such as fatty tissue and lymph nodes. Muscle fibers are densely packed and often connected

Muscles that straighten the trunk, or, more briefly, m. erector spinales are a group of muscles located along the spine in the thoracic and lumbar regions. This is one of the main muscle groups that provide support to the torso and stabilization of the body position in space.

Functions of the Erector Torso Muscle

The main function of the trunk erector muscle is to maintain an upright body position. It is also involved in various movements such as straightening the back, bending the torso forward, bringing the upper limbs towards the body, etc. In addition, this muscle group plays an important role in maintaining correct posture and preventing scoliosis.

Physiology of the erector spinae muscle The erector spinae muscles have a complex structure and include different layers of muscles. One of the most prominent layers is the serratus anterior muscle layer. The serratus anterior muscles lie beneath the external oblique abdominal muscle and have bundles that extend from the sides of the pectoral girdle to the sides of the pelvis. Their function is to bend the torso forward. The serratus posterior muscles are also located under the interspinous muscles and allow you to flex your back. The upper part of the serratus anterior muscles allows you to raise the arm above the waist line, and the lower part bends the arm lengthwise