Flashcards in swallowing Deck (13):
Sequence of complex reflex
1. initiated by pressure receptors in pharyngeal walls
2. receptors signal the medulla which coordinates the following sequence of events
also called the oral prep phase
1. there is an increase in salivary production
2. food is masticated and with tongue movements made into a bolus
1. bolus to posterior of tongue and anterior tongue elevates to hard palate and retracts which forces bolus into oropharynx
2. posterior tongue elevates by mylohyoid and soft palate elevates
is the oral phase voluntary or involuntary?
voluntary by CN, V, VII, XII
1. soft palate to nasopharyngeal wall
2. pharynx constriction by superior pharyngeal constrictor
3. elevation of hyoid and larynx and anteriorly to epiglottis
Is the pharyngeal phase voluntary or involuntary?
it is involuntary
in the pharyngeal phase the passive reflex is controlled by what nerves?
CN, V, X, XI, XII
where is the respiratory located at and what does it do?
located in the center of medulla and briefly gets inhibited for swallowing
what is Deglution apnea?
not breathing while swallowing
1. Relaxation of upper esophageal sphincter
2. Esophageal contractions: peristalsis
3. lower esophageal sphincter relaxes which allows food to enter the stomach
what should be evaluated for swallowing
1. thyroid cartilage: should be mobilized gently side to side
2. Anterior neck: palpated for masses
3. Laryngeal elevation: during swallowing
What 3 steps are required to assess swallowing
1. drink a few ounces of water
2. swallow promptly
3. no significant retention after swallowing