"first pair is between T1 and T2, and the last is between T11 and T12. The first or last pair can sometimes be absent."
"rotatores thoracis muscle"
"rotator brevis muscle"
"rotator longus muscle"
"The multifidus muscle extends from the cervical to the sacral levels, lying lateral to the spinous processes and covering the laminae of the underlying vertebrae from cervical to upper lumbar levels, then expanding to encompass the sacrum at the lumbosacral levels. The fascicles span two to five segments."
"semispinalis capitis muscle"
"semispinalis cervicis muscle"
"semispinalis thoracis muscle"
"origin: posterior sacrum, posterior superior iliac spine, aponeurosis of the erector spinae, sacroiliac ligament, mammillary processes of the lumbar vertebrae, transverse processes of T1-3, articular processes of C4-C7 1,2,4-8"
"origin: T1-T5 or T6 transverse processes 1,2,4-6"
"insertion: spinous process of C2-C5 1,2,4-6"
"origin: T6-T10 transverse processes 1,2,4-6"
"origin: T1-T5 or T6 transverse processes 1,2,4-6"
"origin: T6-T10 transverse processes 1,2,4-6"
"insertion: C6-T4 spinous processes 1,2,4-6"
Expected headings
"Rotatores"
"Multifidus"
"Semispinalis"
"Relations"
"Actions"
"origin: posterior sacrum, posterior superior iliac spine, aponeurosis of the erector spinae, sacroiliac ligament, mammillary processes of the lumbar vertebrae, transverse processes of T1-3, articular processes of C4-C7 1,2,4-8"
"lies superficial to the semispinalis cervicis muscle and deep to the splenius capitis and cervicis and trapezius; sometimes a small portion of the muscle remains exposed as part of the posterior triangle of the neck"
"thin, fleshy fascicles with long tendons at either end; covers the thoracic multifidus muscle"