The Phrynx And Esophagus Flashcards
___ is a region that shares the space for respiration, swallowing, and phonation.
Pharynx
Where is the nasopharynx located?
Behind the nasal cavity above the soft palate (velum)
____ of the naso-pharynx are related to the basilar occipital bone and the arch of the atlas.
The posterior and superior aspect.
What part of the pharynx is continuous with the nasal passages anteriorly?
Nasopharynx
Where is the oropharynx located?
It extends from the soft palate to the epiglottis
What is the anterior border of the oropharynx?
The posterior 1/3 of the tongue
What part of the pharynx is continuous with the oral region?
The oropharynx
Where is the lanryngo(hypo)pharynx?
Lies posterior to the larynx
Extends from the epiglottis to the lower border of the cricoid cartilage
____ opens anteriorly into the oropharynx cavities and continuous inferiorly into the larynx and the esophagus.
The laryngopharynx
The pharynx is opposed posteriorly by the ______.
Prevertebral fascia of the somatic neck.
What forms the posterior limit of the pharynx?
The 3 constrictor muscles
The superior constrictor muscle is apposed by what?
The Buccinator muscle
Where is the superior constrictor apposed by the Buccinator?
At the pterygo-mandibular Raphae
Where does the middle constrictor insert on?
The hyoid bone
Where does the inferior constrictor insert on?
The thyroid cartilage
What constrictor muscle is continuous with the esophagus?
The inferior
What is the posterior region of the constrictor muscles associated with?
- Thyroid gland
- The sympathetic chain and superior cervical ganglion
- The vagus and the glossopharyngeal nerve
Where does the naso-pharynx being?
At the nasal choanae
_________ opens to the lateral wall of the naso-pharynx at the level of the middle meatus of the nasal cavity and terminates at the anterior wall of the middle ear.
Pharyngo-tympanic (eustachion) tube
What part of the eustachian tube s made of bone? ( the rest is made of cartilage)
The ~1/3 proximal to the middle ear
The ___ is an elevation of the cartilaginous wall of the tube at the nasal mucosa.
Torus tubarius
What equalizes pressure between the middle ear and the atmosphere?
The Eustachian tube
______ is trauma to the tympanic membrane due to excess pressure. E.g. During scuba diving
Barotitus
What drains mucous from the middle ear to prevent infections?
Eustachian tube
The Eustachian tube opens upon swallowing or yawning by contraction of what muscles?
The tensor veli palatini and the levator veli palatini muscle
What tonsil is located posterior to the opening of the Eustachian tube?
Tubal tonsil
Infection in the naso-pharynx can track up along the Eustachian tube to produce?
Otis media
What can happen with hypertrophy or edema of the tubal tonsil?
They may occlude the auditory tube with an accumulation of secretions
What is the action of the salpingopharyngeus muscle?
Raises the pharynx during swallowing
What is the origination and insertion of the salpingophrangeus muscle?
O: from the end of the auditory tube and inserts into the pharyngeal muscles
What innervates the salpingopharyngeus muscle?
Vagus
What overlies the salpingopharyngeus muscle?
salpingopharyngeus fold
What is located In the roof of the nasopharynx just inferior to the sphenoid sinus and anterior to the basi-occiput.
The adenoids (pharyngeal tonsils)
An ___ can contribute to sleep apnea, which is a problem when breathing stops for 20 seconds or larger
Enlarged adenoid
Hypertrophy of the adenoids can interfere with?
Nasal respiration, alter phonation and cause ongoing middle ear infection (especially in kids)
The ____ are present at birth, enlarge until 5-7 years,and then diminish in the teen age years
Adenoids
Tumors of the adenoids can invade what space?
Nasopharyngeal space
The ___ muscle descends vertically from the auditory tube, lateral to the opening, to reach the hamulus of the pterygoid bone.
Tensor veli palatini
Where does the tendon of the tensor veli palatini insert after turning medically over the hamulus of the pterygoid bone?
The velum (soft palate)
The __ arises from the under surface of the apex of the petrous part of the temporal bone and from the medial lamina of the cartilage of the auditory tube.
Levator veli palatini
The ___ is a thick, rounded muscle situated lateral to the choannae
Levator veli palatini
What two muscles form the velo-pharyngeal seal during swallowing?
The tensor veli palatini
The levator veli palatini
Note: they also opten the Eustachian tube
The ___ narrows at the level at which the velum establishes the velo-pharyngeal seal.
Pharynx
What is the motor innervation to the muscles that raise velum?
Tensor- V3
Levator- nucleus ambiguas (pharyngeal branch of X)
What supplies sensory to the velum?
IX
What is the posterior border of the oropharynx?
The middle constrictor
What are the two muscles that make up the retropharyngeal isthmus? (Fauces)
Palatoglossus
Palatopharyngeous muscles
What covers the palatoglossus muscle?
The palatoglossal (mucosal) fold
What is the origin and insertion of the palatoglossus muscle?
O: palate
I: tongue
What is the action of the palatoglossus muscle?
To raises the palatoglossal arches anteriorly on the lateral wall of the oro-pharynx
What is the origin and insertion of the palatopharyngeous muscles?
O: laterally from the palate
I: pharyngeal musculature
What covers the palatopharyngeous muscle?
The palatopharyngeal fold
What muscles act as a sphincter, along with the base of the tongue, between the oral cavity and the pharynx?
Palatoglossus and palatopharyngeous
The Palatoglossus and palatopharyngeous are innervated by?
The vagus nerve via the pharyngeal plexus
A triangular __ lies between the diverging fauces on each side.
Tonsillar fossa
The tonsilar fossa extends from the base of the tongue to the edge of the soft palate and contains a mass of lymphoid tissue, called the _____?
Palatine tonsil
When are these structures in danger of being injured: the superior pharyngeal constrictor, the pterygomandibular raphe, the middle pharyngeal constrictor, and the glossopharyngeal nerve
During tonsillectomy
What supplies blood the the palatine tonsils?
Lesser palatine branch (maxillary) Ascending palatine branch (facial) Dorsal lingual branch (lingual) Ascending pharyngeal Facial artery proper
What is the principle vein of the palatine tonsil?
The lingual vein
Severe bleeding of the palatine tonsils can occur via the connections to the ?
External palatine vein