Unformatted text preview: Sternocleidomastoid- extension of head when posterior fibers contract bilaterally, flexion of head and cervical spine when anterion fibers contract bilaterally. Synergists: longissimus capitus and semispinalis capitis Antagonists: sternocleidomastoid anterior fibers in extension and posterior In flexion. Splenius capitus- extend head acting bilaterally and unilaterally rotate head to same side Syn:lonsissimus capitis, spinalis capitis Ant:londus capitis, sternocleidomastoid. Orbicularis oris- clases and purses lips. Syn:mentalis Ant:risorius, buccinators...
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This note was uploaded on 04/02/2008 for the course BIOL 237 taught by Professor Swan during the Spring '08 term at New Mexico.
- Spring '08