Muscles associated with the vertebral column (O/I/A)

Question 1

Semispinalis

Answer 1

O: Transverse processes of C7-T12
I: Occipital bone (capitis), spinous process of cervicals (cervicis), thoracics (thoracis)
A: Extend and rotate head and vertebral column

Question 2

Iliocostalis

Answer 2

O: Iliac crests of ribs 3-6
I: Angles of ribs
A: Extend and laterally flex vertebral column

Question 3

Longissimus

Answer 3

O: Transverse process of L-C vertebrae
I: Transverse process of thoracic or cervical vertebrae
A: Extend/laterally flex vertebral column and head

Question 4

Spinalis

Answer 4

O: Spines of upper lumbar and thoracic vertebrae
I: Spines of upper thoracic and cervical vertebrae
A: Extends vertebral column

Question 5

Splenius

Answer 5

O: Ligamentum nuchae of spinous processes of C7-T6
I: Mastoid process of temporal bone
A: Extend the head

Question 6

Quadratus lumborum

Answer 6

O: Iliac crest
I: Transverse process of upper lumbar vertebrae
A: Flexes vertebral column laterally