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Block 3 Muscles

Stylohyoid Elevates and retracts the hyoid bone during swallowing Facial nerve VII
Posterior belly of the digastric Depresses the mandible and elevates the hyoid bone during swallowing Facial nerve VII
Masseter Elevates and protrudes the mandible, closing the jaw; deep fibers retrude Masseteric Nerve V3
Temporalis Elevates mandible, closing the jaw; posterior fibers retrude Deep Temporal Nerves (V3)
Lateral Pterygoid Together: Depresses and protrudes the chin Alone/Alterately: Side to side movement of the jaw Lateral pterygoid nerve, V3
Medial Pterygoid Together: Elevate jaw to close the mandible, protrudes mandible Alone/Alternately: Protrudes side of jaw, grinding motion Medial pterygoid nerve, V3
Longus Colli Flexes the cervical vertebrae Ventral rami of cervial spinal nerves
Longus capitus Flexes the head Ventral rami of cervical spinal nerves
Scalenus Anterior Flexes the neck and elevates 1st rib during forced inspiration Ventral rami of cervical spinal nerves
Stylopharyngeus Elevates pharynx and larynx during swallowing/speaking Glossopharyngeal (IX)
Superior, middle, and inferior constrictors Constricts wall of pharynx during swallowing Pharyngeal and superior laryngeal branches of Vagus (X) via the pharyngeal plexus
Styloglossus Elevates and retracts the tongue, creating a trough for swallowing Hypoglossal nerve (XII)
Mylohyoid Elevates the hyoid, floor of mouth, and tongue during swallowing/speaking Mylohyoid nerve of V3
Geniohyoid Pulls hyoid bone anterior and superior, shortens floor of mouth, and widens pharynx Ventral ramus of C1
Genioglossus Depresses and protrudes the tongue Hypoglossal nerve (XII)
Hyoglossus Depresses and retracts the tongue Hypoglossal nerve (XII)
Palatoglossus Elevates the posterior tongue Pharyngeal plexus of Vagus (X)
Palatopharyngeal Tenses palate and draws pharynx superior, middle, and anterior during swallowing Pharyngeal plexus of Vagus (X)
Buccinator Pushes cheek against teeth during chewing, purses lips as in when playing an instrument Buccal branch of the Facial (VII)
Levator Veli Palatini Elevates the soft palate during swallowing/yawning Pharyngeal plexus of Vagus (X)
Tensor Veli Palatini Tenses the soft palate and opens auditory tube during swallowing/yawning Medial Pterygoid Nerve, V3
Cricothyroid Stretches and tenses the vocal folds External laryngeal branch of Vagus, X
Thyroarytenoid Relaxes vocal ligaments Recurrent laryngeal branch of Vagus X
Posterior Cricoarytenoid Abducts vocal folds Recurrent laryngeal branch of Vagus X
Lateral Cricoarytenoid Adducts vocal folds Recurrent laryngeal branch of Vagus X
Arytenoideus Muscles Adducts arytenoid cartilage/vocal folds Recurrent laryngeal branch of Vagus X
Vocalis Relaxes posterior vocal ligament, Tenses the anterior part Recurrent laryngeal branch of Vagus X
Thyroepiglotticus Adducts vocal folds Recurret laryngeal branch of Vagus X
Created by: aemonkie5



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