Spry Juncture, LLC
How to Evolve Gracefully
Thyrohyoid
Region
Origin & Insertion
['Origin: Oblique line of thyroid cartilage', 'Insertion: Body and greater horn of hyoid bone']
Synergistic Muscles
['Sternothyroid', 'Omohyoid']
Joints
['None']
Primary Actions
['Depresses hyoid or elevates thyroid cartilage']
Nerve & Spinal Segment
C1 via hypoglossal nerve (CN XII)
Cervical plexus; C1 spinal nerve
Interesting
Unique infrahyoid muscle that may elevate larynx. [Netter’s]
Reversal of Action
Stabilize hyoid while initiating thyroid lift
Common Dysfunctions
Laryngeal movement problems, voice strain
How to Stretch
Look upward and swallow gently to lengthen tissue.
Trigger Points
How to Strengthen
Swallow with resistance via tongue and hand under jaw.
Concentric Action
Depress hyoid or elevate thyroid cartilage
Applications:
Supports voice projection and laryngeal elevation
Eccentric Action
Control relaxation of larynx after lift
Isotonic Action
Resisted swallow or voice glide training
Related Conditions
['Vocal strain', 'Swallowing disorder']
Isometric Action
Hold elevated larynx during swallow drill
Exercise Ideas
['Laryngeal elevation drill', 'Tongue press swallows', 'Hyoid-pitch holds']