MuscleInfrahyoid muscles
Sternothyroid
Latin: M. sternothyroideus
Location: Neck
View the sternothyroid in 3DOrigin
Posterior manubrium and first costal cartilage.
Insertion
Oblique line of the thyroid cartilage.
Action
Depresses the larynx after swallowing; covers and borders the thyroid gland's surgical plane.
Nerve supply
Ansa cervicalis (C1–C3).
Blood supply
Superior thyroid artery.
Clinical relevance
It lies directly on the thyroid lobe; when it must be divided in thyroidectomy it is cut high, because its ansa cervicalis nerve supply enters from below.
Educational anatomy reference, not medical advice. About this content.