Which actions do the rhomboid muscles perform to stabilize the scapula?

Which actions do the rhomboid muscles perform to stabilize the scapula?

• A. Retract, rotate, and stabilize
• B. Protract and depress
• C. Elevate and rotate
• D. Abduct and extend

Answer: (A)

Rhomboid major and minor pull the scapula toward the spine (retraction) and rotate it downward, which helps keep the scapula pressed against the thoracic wall as the arm moves. This combination—retraction plus downward rotation—provides stability of the shoulder blade during various shoulder actions. The “stabilize” part comes from how these muscles lock the medial border of the scapula in place while other muscles move the arm. Protraction is done mainly by serratus anterior, depression by other muscles like the pectoralis minor or lower trapezius, elevation by the levator scapulae and upper trapezius, and abduction/extension of the scapula aren’t primary rhomboid actions.

Rhomboid major and minor pull the scapula toward the spine (retraction) and rotate it downward, which helps keep the scapula pressed against the thoracic wall as the arm moves. This combination—retraction plus downward rotation—provides stability of the shoulder blade during various shoulder actions. The “stabilize” part comes from how these muscles lock the medial border of the scapula in place while other muscles move the arm. Protraction is done mainly by serratus anterior, depression by other muscles like the pectoralis minor or lower trapezius, elevation by the levator scapulae and upper trapezius, and abduction/extension of the scapula aren’t primary rhomboid actions.