Flashcards of Head and Neck Anatomy (Unit 7)

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What is the Origin of Inferior Constrictor Muscle?
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Thyroid and Cricoid Cartilages

What is the Insertion of Cricopharyngeus Muscle?
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Midline Raphe

What is the Insertion of Palatopharyngeus Muscle?
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Posterolateral Pharynx

What is the Insertion of Inferior Constrictor Muscle?
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Midline Pharyngeal Raphe

What is the Innervation of Inferior Constrictor Muscle?
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Sensory: CN X, Motor: CN XI (via X)

What is the Origin of Palatopharyngeus Muscle?
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Palatal Aponeurosis

What is the Innervation of Middle Constrictor Muscle?
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Sensory: CN X , Motor: CN XI (via X)

What is the Action of Inferior Constrictor Muscle?
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Contract in waves (to propel food)

What is the Innervation of Palatopharyngeus Muscle?
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CN XI (via X) (pharyngeal plexus)

What is the Action of Cricopharyngeus Muscle?
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Constant contraction (serves as UES).

What is the Origin of Cricopharyngeus Muscle?
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Lower fibers of inferior constrictor

What is the Action of Middle Constrictor Muscle?
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Contract in waves (to propel food)

What is the Innervation of Cricopharyngeus Muscle?
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Sensory: CN X . Motor: CN XI (via X)

What is the Origin of Middle Constrictor Muscle?
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Hyoid bone (greater and lesser horns)

What is the Origin of Salpingopharyngeus Muscle?
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Cartilage of Eustachian Tube

What is the Action of Salpingopharyngeus Muscle?
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Elevate nasopharynx, open auditory tube, equalize pressure between pharynx and auditory canal

What is the Insertion of Middle Constrictor Muscle?
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Midline pharyngeal raphe (posteriorly)

What is the Action of Palatopharyngeus Muscle?
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Raise pharynx and larynx during swallowing

What is the Insertion of Salpingopharyngeus Muscle?
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Palatopharyngeus muscle

What is the Innervation of Salpingopharyngeus Muscle?
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CN XI (via X) (pharyngeal plexus)

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