Download Muscles Involved in Swallowing

 Innervated by Facial Muscles Involved in Swallowing
V Trigeminal (S) VII Facial (M) Muscle Obicularis oris * Buccinator * Function Seal lips/mouth Tense cheek to maintain food btwn molars Help close mouth Active during sucking Extrinsic Intrinsic Tongue Masticatory Temporalis Retract mandible XII Hypoglossal XII Hypoglossal XII Hypoglossal Suprahyoid Medial pterygoid Lateral pterygoid IX Glossopharyng V Trigeminal VII Facial Infrahyoid Raise mandible to CLOSE jaw Brace mandible Masseter V Trigeminal Superior longitudinal Inferior longitudinal Lower mandible to OPEN jaw Protrude mandible Rotary motion of jaw Curl tongue tip/sides up Shorten tongue Curl tongue tip/sides down Narrow & Lengthen tongue Widen & Flatten Verticalis tongue Hyoglossus Pull tongue back toward hyoid bone Genioglossus Protrude tongue (Occupy same space in tongue; fibers interlace) Palatoglossus * Geniohyoid Protract hyoid Mylohyoid Raise & Stabilize tongue, mouth floor Lower mandible Anterior belly of digastric Lower mandible to OPEN jaw WHILE hyoid Posterior belly is held in place of digastric Stylohyoid Omohyoid XII Hypoglossal Thyrohyoid SpeechRamblings.weebly.com
Raise & Stabilize hyoid Depress mandible to OPEN jaw Retract hyoid Lengthen mouth floor Raise thyroid cartilage/larynx to hyoid Sternohyoid Lower thyroid cartilage Sternothyroid Bolus prep, formation, positioning, transport Lower tongue Raise & Retract tongue Raise floor of tongue to approx tongue to palatoglossal arch to close off oropharynx Transversus Styloglossus Part of musculature ‘sling’ to create tone necessary for positive pressure buildup during bolus propulsion Lower hyoid Pull mandible inferiorly to OPEN jaw Muscles Involved in Swallowing
Palatal V Trigeminal X Vagus XII Hypoglossal Tensor veli palatini Levator veli palatini * Raise & Retract soft palate Palatoglossus * Uvular Laryngeal Thyroarytenoid X Recurrent laryngeal branch of Vagus Tense soft palate Elevate & Retract palate to assist w/VP closure and seal back oral cavity Raise posterior tongue Lower and pull forward soft palate to contact back of tongue Seal back oral cavity from oropharynx via VP closure Raise uvula Brace soft palate Regulate tension of VF Transverse arytenoid Oblique Adduct false folds arytenoid Lateral cricoarytenoid Posterior ABduct VF (at end of swallow) cricoarytenoid Adduct VF Interarytenoid Approximate arytenoids to epiglottis Aryepiglottic Thyroepiglottic Pharyngeal V (Vagus) IX Glossopharyng XI (Accessory) XI (Accessory) -
Cricopharyngeus Relax UES to allow passage of bolus Stylopharyngeus Palatopharyngeus * Lower palate Raise & Retract palate to assist w/VP closure and seal oral cavity Salpingopharyngeus Superior pharyngeal constrictor * X Vagus Lower epiglottis Middle pharyngeal constrictor Inferior pharyngeal constrictor Raises soft palate to seal nasopharynx Part of musculature ‘sling’ to create tone necessary for positive pressure buildup during bolus propulsion Raise & Shorten pharynx Raise larynx Narrow pharyngeal lumen Bolus transport (Distalmost component of PES) Muscles involved in creating pressure for bolus propulsion are indicated with *
All of the floor of the mouth muscles (geniohyoid, mylohyoid, anterior belly of digastric) attach to
the body of the mandible anteriorly and the body of the hyoid posteriorly
Intrinsic muscles are within the tongue only. Extrinsic muscles attach to part of the skeleton
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