Flashcards in Pharynx: muscles Deck (10):
The muscles of the pharynx are divided into two layers. What are these layers?
1) External (circular) Layer
2) Longitudinal Layer
What muscles are found within the External (circular) Layer?
1) Inferior Constrictor
2) Middle Constrictor
3) Superior Constrictor
4) Palatophayngeal Sphincter
What is the common insertion for all of the constrictor muscles
What is the common nerve innervation of the constrictor muscles?
Vagus nerve (CN X) via the pharyngeal plexus
The Inferior constrictor muscle has one extra innervation than the other constrictors. What is that extra innervation?
External Laryngeal Nerve
Which constrictor muscle has fibers that will interweave with the muscle fibers of the tongue?
What is the specialized band of muscle fibers formed by the superior constrictor to help seal the pharyngeal isthmus during swallowing?
What atre the muscles of the longitudinal layer of the pahyranx?
Which muscle of the longitudinal layer works with the tensor veli palatini to open the pharyngotympanic tube?