Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
|
• intrinsic muscles of larynx control
|
glottis (controls airway and produces sound)
|
|
|
• extrinsic muscles of larynx help
|
(infrahyoid mus-cles, suprahyoid muscles, and stylopharyngeus muscle)control the position of the larynx in the neck. Usually, thelarynx is located at vertebral levels C3 to C6
|
|
|
• Thyroid cartilage - the laminae connect in the midline to form
|
pharyngeal prominence
|
|
|
• Cricothyroid joint is formed by
|
- inferior horn of thyroid cartilage to cricoid cartilage (synovial joint)
|
|
|
• Cricothyroid muscle job
|
lengthens the vocal fold by tilting the thyroid cartilage anteriorly, innervated by superior laryngeal nerve (external branch)
|
|
|
• Posterior Cricoarytenoid muscle job
|
, rotates arytenoid cartilage, abducts vocal folds, only muscle that opens the rima glottidis
|
|
|
• Arytenoid muscle feats
|
attaches the two arytenoid cartilages together via oblique and transverse fibers, adducts the vocal folds
|
|
|
• Lateral Cricoarytenoid job
|
adducts vocal folds
|
|
|
• Thyroarytenoid
|
tilts arytenoid cartilage anteriorly, relaxes the vocal fold
|
|
|
Superior Laryngeal Nerve is a branch of
|
vagus nerve
|
|
|
Superior Laryngeal nerve internal branch
|
: provides sensory information to mucosa superior to vocal folds
|
|
|
Superior Laryngeal nerve external branch
|
innervates the cricothyroid and inferior pharyngeal constrictor m.
|
|
|
Inferior Laryngeal Nerve
|
- innervates all of larynx muscles except cricothyroid and provides sensory innervation to mucosa inferior of vocal folds
- terminal nerve from recurrent laryngeal nerve (it is renamed after it enters the larynx posterior to the cricothyroid joint |
|
|
Superior Thyroid Artery
|
- gives off superior laryngeal branch (enters the larynx via thyrohyoid membrane
|
|
|
Inferior Thyroid Artery
|
- gives off inferior laryngeal branch (enters the larynx behind the inferior pharyngeal constricter
|
|
|
Rima glottis+vocal fold
|
glottis
|
|
|
• Vestibule is located in
|
- superior to vestibular folds
|
|
|
• Ventricle located in
|
depression between vestibular and vocal folds (contains saccule)
|
|
|
• Infraglottic cavity located in
|
- inferior to vocal folds (leads to trachea)
|
|
|
• Vestibular fold
|
upper fold, false vocal fold
|
|
|
Vocal fold
|
true vocal fold, most inferior fold (encloses vocal ligament)
|
