Pharynx Flashcards
boundaries of the Nasopharynx
Sup: Chonae -
Inf: Soft palate
boundaries of the Oropharynx
Sup: Inferior to soft palate -
Inf: Superior to epiglottis
boundaries of the laryngopharynx
Sup: Epiglottis -
Inf: Top of oesophagus
Name 3 constrictor muscles of the pharynx
3 constrictors
Superior
Middle
Inferior
All innervated by vagus (CN X)
Name 3 longitudinal muscles of the pharynx
Salpingopharyngeus (CN X)
Palatopharyngeus (CN X)
Stylopharyngeus (CN IX)
Salpingopharyngeus (CN X)
Elevation of pharynx
Palatopharyngeus (CN X)
Elevation of pharynx and closure
of oropharyngeal isthmus
Stylopharyngeus (CN IX)
Elevation of pharynx
identify regions of the pharynx that are
potential areas for food to become lodged
Valleculae: between base of tongue and epiglottis
Piriform recess: channel b/w aryepiglottic fold and thyroid cartilage
Indicate which arteries provide blood to
the pharynx
external carotid artery
- Ascending pharyngeal artery
- Facial artery
- Maxillary artery
- Inferior laryngeal artery
Identify the veins that drain the pharynx
Pharyngeal venous plexus > internal jugular vein
State the innervation (motor )
of the pharynx
All muscles of pharynx are innervated by: Vagus (CN X) motor innervation except stylopharyngeus - glossopharyngeal (CN IX)
State the innervation (sensory)
of the pharynx
Sensory innervation of pharynx:
Nasopharynx - Trigeminal - V2
Oropharynx - Glossopharyngeal
Laryngopharynx- Vagus
what is the oesophagus composed of
composed ext longitudinal, int
circular layers, mucosal lining
