pharynx and larynx Flashcards
cervical levels of pharynx?
base of skull –> C6
from the oropharynx, food passes into what?
laryngopharynx to the esophagus
What is the torus tuberous?
opening of the pharyngotympanic tube (auditory) in the nasopharynx
What opens the pharyngotympanic tube?
salpingopharyngeus and levator levi palatini
regions of laryngopharynx?
superior border of epiglottis–> inferior border of cricoid cartilage (C6).
laryngopharynx communicates with larynx via what?
laryngeal inlet
circular muscles of pharynx?
superior, middle and inferior pharyngeal constrictors
longitudinal muscles of pharynx?
stylopharyngess, palatopharyngeus, and salpingopharyngeus
innervation of superior pharyngeal constrictor?
CN 10 via pharyngeal plexus
attachments of SPC
pharyngeal tubercle and pharyngeal raphe (posterior)
->pterygoid hamulus, pterygomandiular raphe and mandible
attachments of MPC
pharyngeal raphe (posterior) ->stylohyoid ligament and hyoid bone
innervation of MPC?
cranial nerve 10, pharyngeal via plexus
IPC attachment?
pharyngeal raphe (posterior) ->thyroid cartilage and cricoid cartilage
IPC innervation
CN-X via pharyngeal plexus, recurrent laryngeal nerve and external laryngeal nerve (aka: external branch of the superior laryngeal nerve)
action of SPC, MPC, IPC
constricts wall of pharynx during swallowing
What innervates the stylopharyngeus?
9
what innervates palatopharyngeus?
10
what innervates salpingopharyngeus
10
attachments of stylophayrngesus muscle
styloid process–>muscular wall of pharynx and thyroid cartilage
attachments of palatopharyngeus
posterior hard palate and palatine aponeurosis–> muscular wall of pharynx and thyroid cartilage
attachments of salpingopharyngeus
cartilaginous part of pharyngotympanic tube–> muscular wall of pharynx
external fascial lining of pharyngeal muscles called what?
buccopharyngeal fascia
internal fascial lining of pharyngeal muscles?
pharyngobasilar fascia.
action of stylopharyngess, palatopharyngeus and salpingopharyngeus ?
elevate and widen the pharynx during swallowing
how many cartilages does the larynx contain?
9
cervical region of larynx when relaxed?
c3-c6
name the three unpaired cartilages of larynx
thyroid, epiglottis, cricoid
three paired cartilages of larynx
arytenoid, corniculate, cuneiform