Muscles Actions, Origins & Insertions Practice Test

Which muscle inserts on the medial border of the scapula at the level of the spine?

Rhomboid major Trapezius Rhomboid minor Serratus anterior

Correct Answer:

Rhomboid minor

Explanation:

The muscle that inserts on the medial border of the scapula at the level of the spine is the rhomboid minor. It sits high on the medial border, near the spine of the scapula, and its fibers attach there from the spinous processes of C7 and T1. This placement lets it elevate and retract the scapula, stabilizing the shoulder blade against the thorax. In contrast, the rhomboid major inserts lower on the medial border (from the spine of the scapula down to the inferior angle), the trapezius attaches to the spine and acromion rather than the medial border itself, and the serratus anterior inserts along the costal (front) surface of the medial border rather than at the spine level.

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