Swallowing Flashcards
What are the 3 regions of the pharynx
Nasopharynx
Oropharynx
Laryngopharynx
What is the purpose of the pharynx?
Passage for food, liquids & air.
Which arch of the pharyngeal pouches becomes the pharynx?
The 4th.
What can close off the nasopharynx?
The uvula.
What are the 3 constrictors?
Superior, Middle, Inferior.
Name the Palatini muscles?
Levator veli palatini
Tensor veli palatini
What are the pharyngeal muscles?
Palatopharyngeal
Salpingopharyngeus
Palatopharyngeus
Stylopharyngeus
Which structures make up the pharyngeal plexus?
Glossopharyngeal, Vagus & Accessory nerve
What is the oropharynx the boundary of?
Superior boundary of the OROPHARYNX
What is the principle elevator of the soft palate?
Levator veli palatini
Name the muscles involved in raising the soft palate.
Tensor veli palatini, levator veli palatini, palatopharyngeus, uvulus & palatoglossus.
The soft palate is _/3 connective tissue & _/3 muscle.
The soft palate is 1/3 connective tissue & 2/3 muscle.
At rest the velum is RAISED/LOWERED?
LOWERED
Describe palatoglossus
Muscle
On roof of mouth
Depresses side of palate
Describe Palatopharyngeus
Muscle
On roof of mouth
Depresses palate & raises pharynx
Name the 5 palatal muscles
Tensor palati Levator veli palati Palatoglossus Palatopharyngeus Uvulae
Which nerve supplies most palatal muscles?
Vagus nerve CN X
What are the 3 phases of swallowing?
Oral
Pharyngeal
Esophageal
Describe the oral phase of swallowing
Lip closure
Manipulation of bolus
Soft palate against tongue
Describe the pharyngeal phase of swallowing
Close off airways with epiglottis (covers aditus laryngis)
Velopharyngeal closure
False + True vocal folds seal off airways
Lifting of hyoid bone
Larynx brought forward
Movement of bolus down pharynx (peristalic action)
Which stage of swallowing is voluntary?
Oral
Which stage of swallowing is involuntary?
Pharyngeal + Esophageal
