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15 Cards in this Set
- Front
- Back
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Give the Functions of the following muscles of the larynx:
Oblique Arytenoid Muscle: Thyroepliggotic Muscle: Cricothyroid: Posterior cricoarytenoid: Lateral cricoarytenoid: Transverse arytenoid: Thyroarytenoid and vocalis muscles: |
Oblique Arytenoid: narrows laryngeal inlet
Thyroepiglottic: Widens laryngeal inlet Cricothyroid: Tenses vocal fold Posterior cricoarytenoid: abducts vocal fold Lateral cricoarytenoid: Adducts vocal fold Transverse arytenoid: Adducts Thyroarytenoid and vocalis muscles: relaxes vocal cord. |
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Nerve supply to all intrinsic muscles of the larynx is by what nerve? What is this a branch off of?
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Recurrent laryngeal branches of Vagus (CNX)
Except the cricothyroid, this muscle is innervated by the external laryngeal nerve (also vagus) |
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Damage to what nerve will cause hoarseness?
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Recurrent laryngeal nerve...if bot are damaged, the voice is lost
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What are the two boundaries of the trachea?
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Cricoid cartilage to the bifurcation of the carina.
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What nerves innervate the trachea?
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vagus and postganglionic sympathetic nerves.
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What kind of cartilage makes up the trachea? How many rings are there?
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16-20 rings of hyaline cartilage.
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What muscle wraps the hyaline cartilage around the trachea?
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trachealis muscle
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Where do you perform an emergency tracheotomy?
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1 cm below the cricoid cartilage between the second and third cartilaginous rings.
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What 2 types of cartilage make up the larynx?
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Hyaline and elastic cartilage.
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What kind of cartilage is the epiglottis made of?
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Elastic cartilage
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What structure is the adam's apple?
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Thyroid cartilage
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What structure forms the lateral borders of the laryngeal outlet? What kind of cartilage are these structures made of?
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corniculate cartilages - hyaline
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What serves as the expiratory sphincter when you hold your breath?
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Vestibular folds...The false vocal cords.
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What nerve supplies the mucosa of the larynx? What is this nerve a branch of?
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recurrent laryngeal nerve...a branch of CN X (Vagus)
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What artery supplies blood to the larynx? What is this a branch of?
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Superior laryngeal artery, a branch of the superior thyroid artery.
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