pharynx and larynx Flashcards
highest point of pharynx
base of skull
superior constrictor attaches to the base of the skull
where do all constrictor muscles attach
posteriorly at the pharyngeal raphe
what stabilises the constrictor muscles
longitudinal muscles
- stylopharyngeus
- palatinopharyngeus
- salpingopharygneus
where does the superior constrictor attach
pterygomandibular raphe and base of the skull
where does the middle constrictor attach
stylohyoid ligament (lower portion) lesser horn and greater horn of hyoid bone
where does the inferior constrictor attach
oblique line on the thyroid cartilage
sits on fascia of cricothyroid muscles
cricothyroid cartilage
what fascia stabilises the constrictor muscles
pharyngobasilar fascia
- sits between the constrictor muscles and the mucosa
what runs between the superior and middle constrictor muscle
- lingual artery as it comes off the ECA
- hypoglossal nerve
- glossopharyngeal nerve
- lingual nerve
what runs in the same plain as the superior constrictor
buccinator muscle
- border between the two is the pterygomandibular raphe
what structures pass between the middle and inferior constrictor muscles
- internal laryngeal vessel and neves
pharyngeal tonsil and clinical importance
sits at the roof of the nasopharynx
- common in children to get inflamed and block the nasal cavity from the back e.g. Eustachian tube = middle ear infection
where does the palatine tonsil sit
not in terms of arches
border between oropharynx and oral cavity
why is it important to have the posterior aspect of the nasal cavity open
because this is where the Eustachian tube opens
what innervates the sensory of the nasopharynx
V2
what innervates the sensory of the oropharynx
glossopharyngeal
