Muscles Around the Spine

Question 1

What is the Transversospinalis Group?

Answer 1

This is a group of muscles that includes:
Multifidi
Rotatores
Semispinalis Capitis

Question 2

What is the (O) and (I) for the Multifidi muscle group?

Answer 2

(O) Sacrum & TVP of lumbar - Cervical.

I) Spinous processes of Lumbar - 2nd cervical (Multifidi Span 2-4 vertebra

Question 3

What is the Action for the Multifidi Muscle group?

Answer 3

Unilaterally: Contralateral Rotation of the Vertebral Column.
Bilaterally: Extension of the Vertebral column.

Question 4

What is the (O) and (I) for the Rotatores (Spinal Muscle group)?

Answer 4

(O) TVP lumbar - Cervical Vertebra.

I) Spinous Process of lumbar vertebra - C2. (Rotators Span 1-2

Question 5

What is the Action of the Rotaores (Spinal Muscle group)?

Answer 5

Unilaterally: Contralateral Rotation of the Vertebral Column.
Bilaterally: Extension of the Vertebral column.

Question 6

What is the (O) and (I) for the Semispinalis Capitis?

Answer 6

(O) TVP of C4 - T5.

(I) Between the superior and Inferior nuchal lines of the Occiput.

Question 7

What is the (O) and (I) for the Splenius Capitis?

Answer 7

(O) Inferior 1/2 of Ligamentum nuchae and SP of C7 - T4.

(I) Mastoid Process and lateral portion of Superior nuchal line.

Question 8

What is the Action of the Splenius Capitis?

Answer 8

Unilaterally: Ipsilateral Rotation, Ipsilateral Lateral Flexion of the Head and neck.
Bilaterally: Extension of the Head and Neck.

Question 9

What is the (O) and (I) for the Splenius Cervicis?

Answer 9

(O) SP of T3 - T6.

(I) TVP C1 - C3.

Question 10

What is the Action for the Splenius Cervicis?

Answer 10

Unilaterally: Ipsilateral Rotation, Ipsilateral Lateral Flexion of the Head and neck.
Bilaterally: Extension of the Head and Neck.

Question 11

What are all the Sub-occipitals?

Answer 11

Rectus Capitis Posterior Major
Rectus Capitis Posterior minor
Oblique Capitis Superior
Oblique Capitis Inferior

Question 12

What is the (O) and (I) for the Rectus Capitis Posterior Major?

Answer 12

(O) SP of Axis (C2)

(I) Inferior nuchal line of the occiput

Question 13

What is the (O) and (I) for the Rectus Capitis Posterior minor?

Answer 13

(O) Tubercle of the posterior arch of the atlas.

(I) Inferior nuchal line of the Occiput.

Question 14

What is the (O) and (I) for the Oblique Capitis Superior?

Answer 14

(O) TVP of the Atlas.

(I) Between the nuchal Lines of the occiput.

Question 15

What is the (O) and (I) for the Oblique Capitis Inferior?

Answer 15

(O) SP of the Axis.

(I) TVP of the Atlas.

Question 16

What is the (O) and (I) for the Intertransversarii?

Answer 16

Lumbar: Spanning the TVPs of vertebrae L1 - L5.

Cervical: Spanning the TVPs of vertebrae C2 - C7.

Question 17

What is the Action for the Intertransversarii?

Answer 17

Unilaterally: Ipsilateral lateral Flexion of the spine.
Bilaterally: Extension of the spine.

Question 18

What is the (O) and (I) for the Interspinalis?

Answer 18

Lumbar: Spanning the SP C2 - T3.

Cervical: Spanning the SP T12 - L5.

Question 19

What is the Action for the Interspinalis?

Answer 19

Extension of the vertebral Column.