kn 261 4/20

Which of the following is NOT a biomechanical function of the intervertebral discs?

• shock absorption

• maintain vertebral position

• limit vertebral movements

• fuse vertebrae together

MORE THAN 1 ANSWER: What are the agonists of left trunk rotation?

• Left internal oblique

• Right external oblique

• Left external oblique

T/F: The sternocleidomastoid is an agonist for cervical extension

• True

• False

Answer explanation

Bilaterally, the SCM's work together for cervical flexion. Meaning that the SCM is an ANTAGONIST to cervical extension.

What are the agonists for left lateral cervical flexion

• Left splenius capitis

• Left splenius cervicis

• Right SCM

• Left SCM

Answer explanation

Remember: The ipsilateral muscles are always going to be responsible for ipsilateral lateral flexion.

Trunk: left obliques responsible for left lat. flexion

Cervical spine: Left SCM, left splenius muscles responsible for left lat. flexion.

T/F: The left and right SCM have an antagonist relationship for cervical rotation.

• True

• False