3.6.2012

***TILT****

The neck musculature can be broken up in to two distinct functional units: The muscles that extend and flex the head and the muscles that extend and flex the cervical spine.

3.4.2012

Say Yes To Nodding

The neck musculature can be broken up in to two distinct functional units: The muscles that extend and flex the head and the muscles that extend and flex the cervical spine.