Action of Rhomboid Major
Adducts and downwardly rotates scapula
The rhomboid major is a skeletal muscle located in the upper back that is responsible for a variety of movements in the shoulder and scapula. Its primary action is to retract or pull the scapula (shoulder blade) towards the spine. This occurs when the muscle contracts, causing the scapula to move closer to the midline of the body. It also helps to elevate the scapula and rotate it downward and inward towards the spine, which is known as downward scapular rotation.
In addition, the rhomboid major can assist in stabilizing the scapula during various movements of the arm, such as lifting or pushing objects. This is due to its connection with other muscles in the shoulder, such as the trapezius and serratus anterior.
Overall, the action of the rhomboid major is important for maintaining proper posture and shoulder function, as well as preventing injury during physical activities.
More Answers:
Understanding the Role of Subscapularis Muscle in Shoulder Joint Stability and MovementUnderstanding the Subscapularis Muscle: Anatomy, Origins, and Functions in Shoulder Stability
Understanding the Role of Rhomboid Minor in Shoulder Function and Posture Optimization