Pharynx And Pre-Vertebral Region Flashcards
Pharynx at the base of the skull
Funnel shaped
Where does the pharynx join the oesophagus
C6
What does the mucous membrane cover
Nasal, oral, larynx and tympanic cavities
What is the pharynx lined by
Ciliated columnar epithelium
What does the epithelium of the pharynx connect it to
The base of the skull and submucosal coat of the oesophagus
Muscles under the fibrous layer of the pharynx
Almost circular constrictor muscles and longitudinal muscles
What are the three divisions of the pharynx
Nasopharynx, oropharynx and laryngopharynx
Where is the nasopharynx
Behind the nasal cavities, above the soft palate
Roof of the nasopharynx
Sphenoid, occipital and pharyngeal tonsil
Floor of the nasopharynx
Soft palate and pharyngeal isthmus
Anterior boundary of the nasopharynx
Nasal passage
Posterior boundaey of the nasopharynx
Roof and level of C1
Lateral boundary of nasopharynx
Auditory tube and salpingopharyngeal folds
Where does the oropharynx run from/to
The soft palate to the upper border of the epiglottis
Roof of the oropharynx
Soft palate
Anterior boundary of the oropharynx
Mouth
Posterior boundary of oropharynx
C3-C6
What supports the lateral boundary of the oropharynx
Thyroid cartilage, aryepiglotic fold and thyroid membrane
Attachment of the superior constrictor
Lower part of the medial pytergoid plate, ptyergomandibular ligament, mandible and side of the tongue
Insertion of the superior constrictor
Pharyngeal tubercle of the occipital bone, fibrous raphe and middle constrictor
Function of the upper fibres of the superior constrictor
Pull the posterior pharyngeal wall anteriorly to close off the nasopharyx
Propels food into the middle costrictor
Innervation of the superior constrictor
Pharyngeal plexus (Vagus)
Attachment of the middle constrictor
The lower part of the stylohyoid ligament
Insertion of the middle constrictor
Greater and lesser cornua of the hyoid bone
What does the middle constrictor blend with
The superior and inferior constrictors
Function of the middle constrictor
It propels food towards the inferior constrictor
Innervation of the middle constrictor
Pharyngeal plexus (Vagus)
Attachment of the inferior constrictor
Lamina of the thyroid cartilage and cricoid cartilage
Insertion of the inferior constrictor
Raphe and blends with the middle constrictor and oesophagus
Function of the inferior constrictor
Propel food into the oesophagus
Innervation of the inferior constrictor
Pharyngeal plexus (Vagus)
What can the inferior constrictor be split into
Thyropharyngeus and cricopharyngeus