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MUSCULAR SYSTEM HEAD & NECK MUSCLES – make sure you know the actions, origins and insertions for each muscle listed below Mastication Masseter Temporalis Medial and Lateral pterygoids “Strap” muscles (supra and infrahyoid muscles) Mylohyoid Digastric Stylohyoid Geniohyoid Sternothyroid Sternohyoid Thyrohyoid Omohyoid Tongue muscles Genioglossus Styloglossus Palatoglossus Hyoglossus Scalp muscles Frontal and Occipital bellies of Occipitofrontalis/Epicranialis Orbit and eyebrow Obicularis oculi corrugator supercilii levator palpebrae superioris External eye muscles lateral, medial, superior and inferior rectus inferior and superior obliques Mouth Muscles Obicularis oris Zygomaticus major and minor Levator labii superioris Depressor labii inferioris Depressor anguli oris Levator anguli oris Buccinator Risorius Mentalis (models) Levator labii superioris (models) Depressor labii inferioris (models) Plus – don’t forget the: Platysma Sternocleidomastoid Levator scapulae
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