Back mm 5

Question 1

Semispinalis Capitis

Answer 1

Deep
Intrinsic
Transverso-spinalis group
O: TPs of C4-T12, spans 4-6 segments superiomedially
I: SPs of thoracic and cervical vertebrae and the occipital bone between the superior and inferior nuchal lines
INNE: Dorsal Rami

Question 2

Multifidus

Answer 2

Deep
Intrinsic
Transverso-spinalis group
TP of C2-S4 running 2-4 segments superiormedially
O: posterior sacrum, PSIS, S-I ligament, aponeurosis of erector spinae, Mammillary processes of Lumbar TPs, TPs of T1-T3, articular processes of C4-C7
I: SPs of superior vertebrae
INNE: Dorsal Rami

Question 3

Rotatores

Answer 3

Minor Deep
Intrinsic
Transverso-spinalis group
Deepest in groove betwen SPs and TPs and run entire length of vertebral column
O: TPs of inferior vertebrae
I: TPs of 1st (brevis) or 2nd (longus) superior vertebrae
INNE: Dorsal Rami

Question 4

Interspinales

Answer 4

Minor Deep
Intrinsic
well developed in Cxspine and Lumbar
O: SPs of inferior vertebrae
I: superior vertebrae 
INNE: Dorsal Rami

Question 5

Intertransversari

Answer 5

Minor Deep
Intrinsic
Well developed in Cxspine and Lumbar
O: TPs of inferior vertebrae
I: TPs of superior vertebrae

Question 6

Levator Costarum

Answer 6

Minor Deep
Intrinsic
Move inferiorlaterally
O: TPs of T7-T11
I: between tubercles and angles of ribs
Action: Elevate the ribs