The rhomboid minor is a small muscle located in the upper back, specifically between the shoulder blades. It originates from the spinous processes of the upper thoracic vertebrae and inserts into the medial border of the scapula. This muscle plays a key role in retracting the scapula, helping to pull the shoulder blades closer together. Functionally, the rhomboid minor assists in stabilizing the scapula during arm movements. It works in conjunction with other muscles, such as the rhomboid major and the trapezius, to support proper posture and shoulder mechanics. Strengthening this muscle can improve overall upper body strength and stability.