10- Infrahyoid Muscles Flashcards
1
Q
Sternohyoid
A
Most medial muscle of the neck: thin; superficial except inferiorly, covered by sternocleidomastoid.
Depresses larynx and hyoid bone if mandible is fixed; may also flex skull.
2
Q
Sternothyroid
A
Lateral and deep to sternohyoid.
Pulls thyroid cartilage ( plus larynx and hyoid bone inferiorly).
3
Q
Omohyoid
A
Straplike muscle with two bellies united by an intermediate tendon, lateral to sternohyoid.
Depresses and retracts hyoid bone.
4
Q
Thyrohyoid
A
Appears as superior continuation of sternothyroid muscle.
Depresses hyoid bone and elevates larynx in hyoid is fixed.
5
Q
Pharyngeal constrictor muscles
A
Composite of three paired muscles whose fibers run circularly in pharynx wall; superior muscles is innermost and inferior one is outermost; substantial overlap.
