👉 The term "semispinalis" refers to a specific muscle group that is found in the lower back, specifically at the level of the shoulder blade and below the waist. This group includes muscles like the pectoralis major (also known as the biceps), trapezius, serratus anterior, and teres minor. The term "semispinalis" was first used by physiotherapists in the 1960s to describe the muscle group that they
