Muscles of mastication

（重定向自Masticatory muscles）

There are four classical muscles of mastication. During mastication, three muscles of mastication (musculi masticatorii) are responsible for adduction of the jaw, and one (the lateral pterygoid) helps to abduct it. All four move the jaw laterally. Other muscles, usually associated with the hyoid such as the sternohyomastoid, are responsible for opening the jaw in addition to the lateral pterygoid.

单词	Masticatory muscles
释义	Masticatory muscles 英语例句库 Bruxism is a disorder characterized by grinding and clenching of the teeth, companied with fasciculation of masticatory muscles in nonfunctional status. 磨牙症是在非功能状态下咀嚼肌发生自发性收缩，使上下牙彼此磨动或紧咬的现象。英语百科 Muscles of mastication （重定向自Masticatory muscles） There are four classical muscles of mastication. During mastication, three muscles of mastication (musculi masticatorii) are responsible for adduction of the jaw, and one (the lateral pterygoid) helps to abduct it. All four move the jaw laterally. Other muscles, usually associated with the hyoid such as the sternohyomastoid, are responsible for opening the jaw in addition to the lateral pterygoid.
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