Deep Muscles

Question 1

Deep Muscles of the Posterior Trunk

Answer 1

1. Intertransverse
2. Interspinalis
3. Transversospinalis

Question 2

Intertransverse

Answer 2

connects one transverse process to the next

action: side bending or lateral flexion of the spine

Question 3

Interspinalis

Answer 3

connects adjacent spinous processes

action: extension of the spine

Question 4

Transversospinalis

Answer 4

runs superomedially from one transverse process to the next spinous process

3 subdivisions:
Semispinalis
Multifidus
Rotators

Question 5

Semispinalis

Answer 5

spans 5-6 vertebral levels

Question 6

Multifidus

Answer 6

spans 3 levels and are deeper than semispinalis

Question 7

Rotators

Answer 7

span a single, level and are deeper than the other two

Question 8

Deep Muscles of the Neck

Answer 8

1. Rectus capitus posterior minor
2. Rectus capitus posterior major
3. Obliqous captius superior
4. Obliqous capitus inferior

Question 9

Rectus capitus posterior minor

Answer 9

runs from the posterior arch of C1 to the inferior occipital

Question 10

Rectus capitus posterior major

Answer 10

runs from the spinous process of C2 and inserts just lateral to the rectus captius posterior minor

Question 11

Obliqous captius superior

Answer 11

runs from the transverse process of C1 and inserts on the occiput lateral to rectus captius posterior major

Question 12

Obliqous capitus inferior

Answer 12

runs from the spinous process of C2 to the transverse process of C1