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vor mehr als 10 Jahre
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Frage | Antworten |
What are the internal pharangeal muscles? | Palatopharyngeus, stylopharangeus, salpingopharyngeus |
What is the innervation of stylopharangeus? | Glossopharyngeal nerve (CN IX) |
What three muscles make up the external layer of the pharynx? | Superior, middle and inferior pharangeal constrictors |
What are the three parts to the pharynx? | Nasopharynx, oropharynx and laryngopharynx |
What spinal level does the laryngopharynx lie at? | C4-6 |
Which is the only part of the pharynx that food doesn't pass? | Nasopharynx -it is shut off by involuntary contraction of the soft palate |
Where is the laryngopharynx in relation to the larynx? | Posterior |
What is the action of the internal muscle layer of the pharynx? | to elevate the pharynx and larynx during swallowing and speaking |
What nerve supplies the cricothyroid muscle? | External laryngeal nerve (CN X) - from the superior laryngeal nerve |
What nerve supplies all other muscles of the larynx? | Inferior laryngeal nerve (CN X)- a branch of the recurrent laryngeal nerve |
What muscles act to adduct the vocal folds? | Lateral cricoarytenoid and transverse and oblique artytenoids |
What muscle acts to abduct the vocal folds? | Posterior crico- arytenoid |
What is the action of cricothyroid? | Stretches and tenses the vocal ligament |
what is vocalis? | It is the slender muscle slip medial to thyro-arytenoid muscle fibres |
What is the function of vocalis? | It relaxes the posterior vocal ligament while maintaining tension of the anterior part |
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