5. Pharynx, Soft Palate, Salivary Glands Flashcards
The _____ is the elevation formed by the base of the cartilaginous portion of the Eustachian tube
Torus tubarius
The lateral wall of the nasopharyngeal contain the openings of the
Pharyngotympanic (Eustachian) tubes
The _____ is a mucous membrane fold that runs posterorinferiorly from the lower part of the torus tubarius. It contains _______
Salpingopharyngeal fold
Salpingopharyngeal muscle
The _____ is a depression located behind the torus which usually contains a small amount of lymphoid tissue
Pharyngeal recess
The _____ (called _____ when enlarged) are accumulations of lymph tissue that are located in the mucous membrane of the roof and posterior wall of the nasopharynx. They are located posterosuperiorly to the Eustachian tube and can block it when inflamed
Pharyngeal tonsils
Adenoids
Mucous membrane folds that constitute the anterior and posterior pillars of the fauces ( region of the mouth bounded by the soft palate and the base of the tongue
Palatoglossal and palatopharyngeal arches (the palatine arches)
Contain self-titled muscles
The palatine arches define the boundaries of the…
Tonsil at beds
The tonsilar bed is clinically significant because these run deep to its mucosa and can be damaged during tonsillectomy
Ascending pharyngeal and facial arteries
External palatine vein
Glossopharyngeal nerve on lateral wall (sensory and special sensory (taste) to back of tongue)
Accumulation of lymphoid tissue that sit in tonsilar beds (concavities between palatoglossus and palatopharyngeal muscles bilaterally)
Palatine tonsils
Where do you swab for strep?
Palatine tonsils
The ______ is located posterior to the lyrangeal cartilages and anterior to the C3-C6 vertebral bodies. It communicates with the larynx through the _____ on its anterior wall
Laryngopharynx
Lyrangeal inlet
Mucosa-lined depressions on either side of the lyrangeal inlet, formed by invaginations of the larynx into the anterior wall of the laryngopharynx
Piriform recess
If a foreign body gets lodged in the piriform recess, it can damage what nerves?
Internal and recurrent/inferior lyrangeal nerves
The outer wall of the pharynx is made up of what 3 paired muscles? Their circumferentially oriented fibers fuse in the midline at the ______.
Superior, middle, and inferior constrictors
Median pharyngeal raphe
The inner layer of the pharynx has 3 _______ oriented muscles, called:
Longitudinally
Stylopharyngeus, salpingophayrngeus,
Palatopharyngeus
The soft palate is composed of what 5 paired muscles? These all insert into the medically positioned ______ which forms the substance of the soft palate.
Levator believe palatini Tensor veli palatini Palatoglossus Palatopharyngeus Musculus uvulae Insert into the palatine aponeurosis
Describe the motor innervation in the pharyngeal plexus
CN X supplies all pharyngeal and soft palate muscles EXCEPT:
CN IX: stylopharyngeus
CN V3: tensor veli palatini
What nerve provides sensory to the pharynx?
Glossopharyngeal (IX): general sensory to the mucosa, posterior 1/3 of the tongue. Special sensory to the posterior 1/3 of the tongue
What carries sensory afferents from the mucosa of the tympanic cavity, Eustachian tube, and mastoid air cells?
The tympanic branch of CN IX (glossopharyngeal) aka the tympanic plexus
The ____ is a continuation of the tympanic plexus that carries preganglionic parasympathetics that synapse in the otic ganglion and then provide secretomotor to the parotid gland
Lesser petrosal nerve
The act of swallowing
Deglutition
What are the stages of deglutition? State whether they are voluntary or involuntary
- Oral preparatory/transfer phase (voluntary)
- Pharyngeal phase (<1 sec) (involuntary: swallow/pharyngeal reflex)
- Esophageal phase (involuntary)
Name the 3 salivary glands and the way by which they receive their parasympathetic input (nerve and ganglion)
Parotid: lesser petrosal nerve, otic ganglion
Submandibular and sublingual: chorda tympani and the submandibular ganglion
What cranial nerves are involved in mastication?
Mandibular division of trigem (V3) Facial nerve (VII)
