Thoracic spine - origin, insertions and actions Flashcards
what is the origin of the erector spinae - iliocostalis thoracis?
TP of c7
top of lower 6 ribs
what is the insertion of the erector spinae - iliocostalis thoracis?
top of upper 6 ribs
what is the action of the erector spinae - iliocostalis thoracis?
extension and side flexion
what is the origin of the erector spinae - spinalis thoracis?
SP of T11, T12, L1 and L2
what is the insertion of the erector spinae - spinalis thoracis?
SP of T4 - T8
what is the action of the erector spinae - spinalis thoracis?
extension
what is the origin of the erector spinae - longissimus thoracis?
TP of lumbar
what is the insertion of the erector spinae - spinalis thoracis?
TP of thoracic
lower 9 ribs
what is the action of the erector spinae - spinalis thoracis?
extension and side flexion
what is the origin of the semispinalis?
AP of C3 - C6
TP of C7, T1 - T6
what is the insertion of the semispinalis?
nuchal line of occipital bone
what is the action of the semispinalis?
vertebral column extension and draws head backwards
what is the origin of the rotatores?
TP of thoracic spine
what is the insertion of the rotatores?
SP 1-2 levels above its origin
what is the action of the rotatores?
extension and rotation
what is the origin of the rhomboid major and minor?
minor - C7 - T1
major - T2 - T5