G11 Pharynx Flashcards
Extends from skull base to inferior border of cricoid cartilage. Consists of circular and longitudinal mm wrapped in fascia. Lined with mucous membrane containing mucous glands.
Pharynx
Border between nasopharynx and oropharynx
Soft palate
Border between oropharynx and laryngopharynx
Epiglottis
Border between Laryngopharynx and Esophagus
C6 vertebral level
Connection between pharynx and middle ear
Auditory (Eustachian/Pharyngotympanic) Tube Orifice
Cartilage of auditory tube
Torus Tubarius
Route air and food into trachea and esophagus
Laryngopharynx
Functions of larynx
- Phonation
- Regulate size of opening between vocal folds
- Prevent foreign bodies from entering airway
- Acts as sphincter
Superior Constrictor attachments
- Pterygomandibular raphe
- Pterygoid hamulus
- Medial plate of pterygoid process
- Pharyngeal tubercle
- Pharyngeal raphe
Middle constrictor attachments
- Stylohyoid ligament
2. Pharyngeal raphe
Inferior Constrictor m attachments
- Oblique line
- Cricoid cartilage
- Hyoid Bone
- Pharyngeal raphe
Oropharyngeal triangle boundaries and purpose
Ant- Mylohyoid
Post- Middle constrictor
Sup- Superior Constrictor
For structures to enter/exit oral cavity
Pharynx arterial supply is predominantly via _____ and _____ aa. (Branches of ECA)
Ascending pharyngeal
Superior Thyroid
_____ supplies symp nn to pharyngeal plexus.
____ supplies motor innervation to pharyngeal mm
_____ supplies motor innervation to stylopharyngeus and sensory to pharynx
Superior Cervical Ganglion
CN X
CN IX
Loss of motor nn to pharynx lead to ______
Loss of sensory nn to pharynx may cause loss of ____
Marked dysphagia (difficulty swallowing)
Gag reflex
