Muscles of back (superficial on the left, deeper layer on the right after removing latissimus dorsi and trapezius : 2:splenius capitis, 3:sternocleidomastoid, 4:trapezius, 5:deltoid, 6:teres minor, 8:rhomboid, 9:teres major, 10:latissimus dorsi, 12:external obdominal oblique, 14:gluteus maximus, 18:splenius cervices, 19:levator scapula, 21:rhomboid, 22:infraspinatus, 23:triceps brachii, 24:serratus anterior, 27:serratus posterior,