Muscles of upper back serve a very important part in posture and movements of the human body. Often athletes and sports enthusiasts give much attention to the development of the upper back muscles. These muscles are bundled together that is why they are strong and can exert great force. Basic knowledge on the anatomy of the upper back would give the person an insight on how to properly execute exercises and daily activities to ensure the preservation of proper posture.
Overview of Muscles of Upper Back
The upper back covers a large area of the human body. These muscle work together with other muscles in the body such as muscles in the arm and legs for the body to move about such as moving the arm and legs. The whole upper back muscles start from posterior neck to the anterior buttocks. Upper back muscles are skeletal muscles which are attached to the body’s skeleton or bones. Skeletal muscles fibers are cigar-shaped, multinucleated cells, and the largest of all muscle types. Skeletal muscles are can be controlled with the conscious mind, but there are times skeletal muscles can be activated through reflexes.
Parts of the Muscles of Upper Back
- Erector Spinae
Although they may quite a few numbers upper back muscles, these large muscles are strong and can exert great force. Together with the spine, they maintain the human posture and necessary movements of the human body.
Anatomy of the Upper Back Muscle
The trapezius which is the most superficial muscle runs from the occipital bone of the skull down the vertebral column to the end of the thoracic vertebrae. They form a diamond shape on the back. Laterally they connect or insert on the scapular spine and clavicle. Erector spinae, the prime mover of back extension, are deep muscles of the back. They serve as powerful back extensors and provide resistance that helps control the action of bending over at the waist. The deltoid forms the rounded shape of the shoulders. This muscle is the common site for intramuscular injections. This is also the primary movers of arm abduction. Rhomboids are not commonly known by many but the function of this particular muscle is very important. They pull the scapula together or hyperextend it. The rhomboids are comprised of rhomboid major and rhomboid minor.
Functions of the Muscles of Upper Back
The upper back muscles function as support of the head as well as the trunk. They provide movement to the upper body, from the neck, down to the arms. The upper back muscles allow the human body to bend forward, backward, and extend, or abducts arms with the help of the skeleton.
Summary of the Upper Back Muscle
The muscles of upper back serve an important function in the body movements. Together with the skeletal system, the muscles can make the body move and exert great force to achieve their tasks. Different muscles serve different functions. They may be fragile but the way they are arranged makes them strong.
The importance of knowing the basic anatomy of the upper back muscles allows a person to fully understand how these muscles work together. You may want to research a little bit further to know other muscles involved with the muscles of upper back.