C1
C2
C3
C4
C5
C6
C7
C8
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
L1
L2
L3
L4
L5
S1
S2
S3
S4
S5
Co
T2 FLEXORS
Innermost intercostals
Internal intercostals
Subcostalis
Transversus thoracis
T2 EXTENSORS
External intercostals
Iliocostalis mm.
Longissimus mm.
Multifidus mm.
Rotatores mm.
Semispinalis mm.
Serratus posterior superior
Spinalis mm.