Final answer:
The anterior thoracic muscles serratus anterior, subclavius, and pectoralis minor, along with the posterior thoracic muscles trapezius, rhomboid major, and rhomboid minor, are responsible for moving the scapula.
Step-by-step explanation:
The muscles that move the scapula perform a variety of functions necessary for shoulder mobility and stability. The anterior thoracic muscles involved in positioning the scapula include the subclavius, pectoralis minor, and serratus anterior. On the posterior thorax, the muscles responsible for scapular movement are the trapezius, rhomboid major, and rhomboid minor. Specifically, when the rhomboid muscles are contracted, they move the scapula medially, influencing the posterior movement of the shoulder and upper limb.