Phanyx Flashcards
Where does the pharynx extend from
The nasal cavity to the oesphagous
Where are the palatine tonsils located
Between the palatoglossal and palatophyanygeal arches
What kind of epithelium is the nasopharynx. Lined with
Respiratory epithelium - ciliated columnar with goblet cells
What 4 Tonsils constitute the waldeyers ring and what is there function
The pharyngeal tonsils, tubal tonsils, the palatine tonsils and the lingual tonsils , they have a protective immune function for the airways. Protecting the airways from bacteria entering
What is the nerve supply of the pharyngeal constrictors
Supplied by the vagus nerve via the pharyngeal plexus
What is the function of the pharngyeal constrictor muslces
They contract sequentially in swallowing to push the food bolus down towards the oesphagous
The inferior pharyngeal constrictor has a lower circular part known as the cricopharyngeus that forms a sphincter around the upper oesphagous - wha is the function of this
Preventing air being drawn into the stomach during inhalation
What is special about the embryological origin of the stylopahrgyeus
It is the only muslce derived from the the 3rd pharyngeal with and it supplied by the glossopharyngal nerve
What happens during the oral phase of swallowing
Food bolus in the oral cavity and is compressed against the palate and through the movements of the muscles of the tongue and soft palate pushed from mouth to oropharyx
During the pharyngeal phase of swallowing how does the epiglottis protect the airway
By closing off the laryngeal inlet
During the oesophageal phase what happens as the inferior pharyngeal constrictor contacts
The upper oesophageal sphincter relaxes alllowing the food bolus into the oesphagous
What is the movement that moves the bolus towards the stomach
Peristaltic
What happens to the soft palate during swallowing
It is elevated to prevent passage of food into the nasal cavity
What does the tensor veil palatini do
It tenses the soft palate and opens the auditory tube in swallowing and yawning to facilitate pressure exchange between ear and auricle
What is the motor control of the soft palate
The mandibular nerve
