The erector spinae group of muscles includes the spinalis and the iliocostalis, and longissimus (Option 4).
The erector spinae muscles are a group of different muscles and mainly consist of 3 muscles. i.e., the spinalis muscle, longissimus muscle, and iliocostalis muscle.
The erector spinae muscles is a muscle group located at the back, bilaterally along the spine.
The erector spinae serves to extend the back at the hip, thereby producing the torso being pushed upward.
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