Palpation Lower Body

Question 1

Insertion of the erector spinae group

Answer 1

Various attachments at the posterior ribs, spinous and transverse processes of the thoracic and cervical vertebrae, mastoid process of the temporal bone and between superior and inferior nuchal lines of the occipital bone

Question 2

Actions of the erector spinae group

Answer 2

As a group

Bilaterally: extends the trunk, neck and head
Unilaterally: laterally flexes the trunk, neck and head to the same side

Question 3

Origin of Quadratus lumborum

Answer 3

Posterior iliac crest

Question 4

Insertion of the quadratus lumborum

Answer 4

Inferomedial 12th rib and transverse processes of L1-L4

Question 5

Action of the quadratus lumborum

Answer 5

Bilaterally: extends the trunk

Unilaterally: laterally flexes the trunk to the same side

Question 6

The origin of the erector spinae group

Answer 6

Thoracolumbar fascia from the posterior sacrum, posterior iliac crest, lumbar spinous processes and the 11th and 12th thoracic vertebrae