48. Pharynx and Pre-vertebral Region Flashcards
At which vertebral level does the pharynx join oesophagus?
C6
What are the 3 divisions of the pharynx?
Naso
Oro
Laryngo
Roof of nasopharynx?
Sphenoid
Occipital
Pharyngeal tonsil
Floor of nasopharynx?
Soft palate
Anterior wall of nasopharynx?
Nasal passages - conchae
Lateral wall of nasopharynx?
Eustacian tube
Salpingopharyngeal fold
Where does the oropharynx run to and from?
From soft palate
To upper border of epiglottis
Roof of oropharynx?
Soft palate
Floor of oropharynx?
Posterior 1/3rd of tongue
Lingual tonsil
Glossoepiglottic folds
Anterior wall of oropharynx?
Mouth
Posterior wall of oropharynx?
C2/C3
Lateral wall of oropharynx?
Palatoglossal and palatopharyngeal folds
Anterior wall of laryngopharynx?
Larynx
Posterior wall of laryngopharynx?
C3-6
Lateral wall of laryngopharynx?
Thyroid cartilage
Aryepiglottic fold
Thyrohyoid membrane
Origin of superior constrictor?
Medial pterygoid plate Hamulus Ptergomandibular ligament Mandible Side of tongue
Insertion of superior constrictor?
Pharyngeal tubercle of occipital bone
Fibrous raphe
Middle constrictor
Action of superior constrictor?
Pull posterior pharyngeal wall anteriorly to close off nasopharynx
Propel food to middle constrictor
Innervation of superior constrictor?
CNX - pharyngeal plexus
Origin of middle constrictor?
Sytlohyoid ligament
Greater and lesser cornua of hyoid
Insertion of middle constrictor?
Raphe
Action of middle constrictor?
Propel food to inferior
Innervation of middle constrictor?
CNX - pharyngeal plexus
Origin of inferior constrictor?
Lamina of thyroid (thyropharyngeus)
Lamina of cricoid (circopharyngeus)
Insertion of inferior constrictor?
Raphe
Blend with middle constrictor and oesophagus
Action of inferior constrictor?
Propel food to oesophagus
Innervation of inferior constrictor?
CNX - pharyngeal plexus
Cricopharyngeus - external laryngeal nerve
Which are the three longitudinal muscles?
Stylopharyngeus
Salpingopharyngeus
Palatopharyngeus