✅Swallowing Flashcards
What are the three stages of swallowing?
Oral
Pharyngeal
Esophageal
What happens at the oral phase?
During the oral phase, food is chewed and mixed with saliva to form a soft consistency called a bolus. The tongue then moves the bolus toward the back of the mouth.
What happens at the pharyngeal phase?
During the pharyngeal phase, the vocal folds close to keep food and liquids from entering the airway. The larynx rises inside the neck and the epiglottis moves to cover it, providing even more airway protection.
What happens at the esophageal stage?
During the final stage, the esophageal stage, the bolus moves into the esophagus, the muscular tube that contracts to push the bolus into the stomach.
For liquids what is the oral preparatory stage?
Mandible lowers & lips abduct
Tongue holds bolus in oral cavity (1s)
Anterior tongue depresses, sides rise (to cup the bolus)
Tongue elevates to velum
What is required at the preparatory stage of swallowing solids?
Requires MASTICATION
Mandible Teeth Cheeks Lips Tongue
What are the muscles of mastication?
MASSETER TEMPORALIS MEDIAL & LATERAL PTERYGOID BUCCINATOR DIGASTRIC
What is the cycle of mastication movement?
Soft palate
Hyoid bone
Jaw
Tongue
What is there no division of in mastication and why?
oral/pharynx to allow aromas to nasal cavity
What happens at the oral transport stage?
Food is ready to swallow, placed on tongue and moved to oropharynx
Tongue contacts hard palate, contact expands, squeezing food backwards.
What tongue muscles are used in the oral transport stage?
Extrinsic & Intrinsic Tongue Muscles
What happens at the pharyngeal transport stage?
Soft palate elevates, contracts lateral and posterior walls of pharynx
Base of tongue retracts pushing bolus against pharyngeal walls
Pharyngeal muscles contract from top to botton – squeezing bolus down
