| 词条 | Infrahyoid muscles | ||||||||||||||||||||||||
| 释义 |
| Name = Infrahyoid muscles | Latin = Musculi infrahyoidei | Image = Infrahyoid muscles.png | Caption = Muscles of the neck seen from the front. The infrahyoid muscles are coloured in violet. | Image2 = | Caption2 = | Origin = | Insertion = | Blood = | Nerve = Ansa cervicalis | Action = Depress the hyoid bone | Antagonist = }} The infrahyoid muscles (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. The infrahyoid muscles either originate from or insert on to the hyoid bone. 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. Individual musclesThe origin, insertion and innervation of the individual muscles:[1]
Nerve supplyAll of the infrahyoid muscles are innervated by the ansa cervicalis from the cervical plexus (C1-C3) except the thyrohyoid muscle, which is innervated by fibers only from the first cervical spinal nerve travelling with the hypoglossal nerve. FunctionThe infrahyoid muscles function to depress the hyoid bone and larynx during swallowing and speech. See also
References1. ^{{cite book |author1=Ellis, Harold |author2=Susan Standring |author3=Gray, Henry David |title=Gray's anatomy: the anatomical basis of clinical practice |publisher=Elsevier Churchill Livingstone |location=St. Louis, Mo |year=2005 |pages=538–539 |isbn=0-443-07168-3 |oclc= |doi= }} {{Muscles of neck}}{{Use dmy dates|date=February 2011}}{{Authority control}}{{DEFAULTSORT:Infrahyoid Muscles}} 1 : Muscles of the head and neck |
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