Laryngeal Vestibule Closure Flashcards
W/ the epiglottis is upright- its job is to divert the bolus around the airway—-
True
What should a report speak primarily about?
Impact on LVC
What are two goals of swallowing?
Efficiency & airway protection
Laryngeal elevation adds traction to the ues
True
Hyoid help ues & epiglottis?
Nope
Separate it into two main goals: approximation of arytenoids & epiglottis inversion
True
LVC?
Modified
Is epiglottis a passive structure?
Yes it only moves when someone else moves
What causes the epiglottis to move? Holds hands over eyes
Ariepiglottic muscle not sufficient, but plays a role
Elevation of larynx, posterior movement of tongue- places it in horizontal position
Inferior, middle, sup- helps squeeze epiglottis down
UES opening
Hyoid is a
Fulcrum— moving in lots of different directions- doesn’t articulate anyway
What muscles are attached to the hyoid?
Submental- don’t cause elevation
What muscles move the arytenoids anteriorly?
The area at the glottic and lateral crico arytenoid muscle moves the arytenoids.
Arytenoid movement is not a biomechanical effect of laryngeal elevation. It is under separate active neuromuscular control
Arytenoids adduction and Arytenoids anterior movement when combined with epiglottic inversion allows for contraction of the area at the glottic muscle which leads to add duction of the airy epiglottic folds in a posterior dorsal direction
What role does the corniculate and cuneiform cartilages play?
These cartilages add stiffness to the folds for further protection from airway invasion
How does epiglottic inversion contribute to LVC?
By contacting the arytenoids covering the laryngeal inlet and diverting the Bullist laterally away from the laryngeal vestibule toward the PES. Typically the bullet splits into two pieces to flow down and around the airway
What contributes to epiglottic inversion?
Epiglottic elevation tongue face retraction and pharyngeal construction primarily facilitate epiglottic inversion
