TOPIC 6C. Pharynx, oesophagus, blood supply and innervation Flashcards
what is the pharynx
common cavity between respiratory and digestive system
what does the pharynx connect
oral cavity, nasal cavity and larynx
what are the 3 parts of the pharynx
oropharynx, nasopharynx and laryngopharynx
dorsal border of pharynx
base of skill, c1, c2
ventral border of pharynx
larynx and mandible
what separates the pharynx into its dorsal and ventral parts
the soft palate
what lines the pharynx
respiratory mucosa
where do the 2 portions of the pharynx meet
ostium intrapharyngeum
what suspends the pharynx
palatopharyngeal arches
what do sus have
diverticulum pharynx
what do un have
rec pharyngues
name the 7 openings of the pharyngeal cavity
choanae (paired) isthmus fauciem auditus laryngei auditus oesophagei ostium pharyngeus tubae auditivae (paired)
name the cranial muscles of the pharynx
mm pterygophargei
m palatopharyngeus
name the middle muscles of the pharynx
m stylopharyngeus
m hyophargeus
name the caudal muscles of the pharynx
m thyropharngeus
m cricopharyngeus
which muscle is the only one to dilate the pharynx
m stylopharyngeus
where does the oesophagus begin and end
dorsal to the cricoid cartilage of the larynx
ends entering the cardia of the stomach
where does the oesophagus run
left of trachea, then dorsal to it in thoracic cavity, then along base of heart
how does the oesophagus enter the abdominal cavity
through hiatus oesophagi in the diaphragm
what flanks the oesophagus
dorsal and ventral branches of n vagus
parts of the oesophagus
cervical, thoracic and abdominal
layers of the oesophagus
mucosal (epithelial, lamina proprium, lamina musc)
submucosal
muscular (longitudinal and circular)
adventitia/serosa/peritoneum
blood supply to oesophagus
a bronchoesophagea, rr oesophagi
innervation of oesophagus
sympathetic trunk and n vagus (dorsal and ventral branches)
narrowing of the oesophagus
thoracic inlet, base of heart and oesophageal hiatus
blood supply of pharynx
a thyroidea cran and caud
a laryngea cran
a pharyngea ascendens
pharyngeal innervation
n laryngeal cran (ex n vagus)
n laryngeal caud (ex n laryngeus recurrens)
tonsils
tubal tubae auditivae (ru and sus) choanal palatine (not in sus) lingual (large in eq, bo) pharyngeal
