The infrahyoid muscles, or strap muscles, are a group of four pairs of muscles in the anterior (frontal) part of the neck. The four infrahyoid muscles are: the sternohyoid, sternothyroid, thyrohyoid and omohyoid muscles.
Muscles of the neck seen from the front. The infrahyoid muscles are coloured in violet.
|Depress the hyoid bone
|Anatomical terms of muscle
The term infrahyoid refers to the region below the hyoid bone, while the term strap muscles refers to the long and flat muscle shapes which resembles a strap. The stylopharyngeus muscle is considered by many to be one of the strap muscles, but is not an infrahyoid muscle.
|Posterior surface of manubrium sterni, adjoining parts of clavicle and the posterior sternoclavicular ligament
|Medial part of lower border of hyoid bone
|Posterior surface of manubrium sterni and adjoining part of first costal cartilage
|Oblique line of thyroid cartilage
|Oblique line of the thyroid cartilage
|Lower border of the body and the greater cornu of the hyoid bone
|Cervical spinal nerve 1 via the hypoglossal nerve
|Omohyoid (superior belly)
|Superior root of ansa cervicalis (C1)
|Omohyoid (inferior belly)
|Superior border of scapula
|Ansa cervicalis (C1-C3)
- KenHub. "Infrahyoid muscles". Retrieved 24 May 2019.
- Ellis, Harold; Susan Standring; Gray, Henry David (2005). Gray's anatomy: the anatomical basis of clinical practice. St. Louis, Mo: Elsevier Churchill Livingstone. pp. 538–539. ISBN 0-443-07168-3.