A- Unilaterally:With the ribs fixed, laterally flex the head and neck to the same side (all)Rotate head and neck to the opposite side (all)Bilaterally:Elevate the ribs during inhalation (all)Flex the head and neck (anterior)O- (Scalenes) Transverse processes of third throughsixth cervical vertebrae (anterior tubercles)O- (middle) Transverse processes of second throughseventh cervical vertebrae (posterior tubercles)O- (posterior) Transverse processes of sixth andseventh cervical vertebrae (posteriortuberclesi- (Scalenes) first ribi- (middle) first ribi- (posterior) 2nd rib