LAB Mouth, Tongue, Larynx Flashcards
Where does the parotid duct come out?
The second molar
Where do the palatine tonsils sit between?
The palatoglossal arch and the palatopharyngeal arch
What gland is at the floor of the mouth?
Submandibular gland
What is the frenulum?
Divides the oral cavity to left and right
What developmental delay leads to “tongue tied” stuff?
The frenulum of the tongue
It would need to be cut
What goes over the lingual nerve?
The submandibular gland
What hangs on the lingual nerve (after it joins the choroid tympani)?
The submandibular ganglion
Facial nerve is preganglionic
What two ganglion does the facial nerve feed?
The submandibular
The pterygopalatine
What is the hyoglossus muscle?
Goes from the hyoid bone to the tongue
What runs over the hyoglossus muscle?
The hypoglossal nerve
What is the most important muscle in the tongue region?
Genioglossus
Takes origin of four geniotubercles
What is the genioglossus muscle innervated by?
The hypoglossal
What does the genioglossus muscle do?
Stick out the tongue straight
What happens if you have a lower motor neuron lesion in the hypoglossal nerve?
The tongue will stick out to the opposite side
What is the geniohyoid innervated by?
Cervical nerve 1
What are the three muscle coming off the styloid process?
Styloglossus
Stylopharyngeus
Stylohyoid
What artery is under the hyoglossus muscle?
The lingual artery
Along with the hypoglossal nerve
Where do you find the Glossopharyngeal nerve?
Around the stylopharyngeus muscle
Right below the superior and middle comstrictor
Supplieing posterior third of the tongue, sensory and taste
Where do the taste fibers end up?
The brainstem
A tract called the solitary tract, surrounding the solitary tract is the solitary nucleus sending stuff to the thalamus, then to the insulary cortex
What is the one tongue muscle not supplied by the hypoglossal?
Palatoglossus supplied by the vagus
Where do the taste fibers from the lingual nerve have their cell bodies?
The geniculate ganglion
Where do the central process from the geniculate ganglion go?
Solitary tract
From CN 9 also
Where does the lymph for the anterior tongue drain?
The submental lymph nodes
Where does the lymph from the sides of the tongue drain?
The submandibular nodes
Where does lymphmfrom the center of the tongue drain?
Both sides
Where does lymph drain from posterior tongue drain?
The internal jugular and corotid nodes
What is the epiglottic valleculae?
Connects the epiglottis and hyoid
The saliva collects here and may find squamous cell carcinomas
What is on the posterior side of the thyroid cartilage?
The arytenoid cartilage
Controls movements of the vocal cords
On top of the cricoid cartilage
Where does the epiglottis attach?
The thyroid cartilage
Where do the muscles of the vocal cord attach?
The muscular process of the arytenoid cartilage
What is important about the internal branch of the superior laryngeal nerve?
It supplies sensory to the area above the true vocal cords
What are the three areas of the larynx?
The vestibule
Middle part
Infraglottic region
What is the false vocal cord?
The vestibular fold
What nerve supplies the vocal cords of the larynx?
The reccurrent laryngeal branch of he vagus nerve
Also sensory to below the true vocal cord
What is the one muscle at the larynx?
The cricothyroid supplied by the external branch of the superior laryngeal nerve
What is the posterior cricoarytenoid muscle?
On the laminar process of the cricoid cartilage
ABDUCTS the vocal cords
Supplied by the recurrent branch of the laryngeal nerve of the vagus
What nerve stimulates he cough reflex?
The internal branch of the superior laryngeal nerve
What does the hypoglossal nerve pass over?
The hypoglossus muscle
What is found in the floor of the tonsillar fossa?
Glossopharyngeal nerve
Styloglossus muscle
Superior pharyngeal constrictor
What is responsible for protrusion of the tongue?
The genioglossus muscle
What structure boarders the oral cavity and the Oropharynx?
The palatoglossal fold
What nerve innervates stylopharyngeus?
The Glossopharyngeal
Also the tonsillar fossa
What is the only tongue muscle not innervated by the hypoglossal nerve and what is it innervated by?
The palatoglossus
Innervated by the vagus nerve
Which nerve is responsible for referred pain from the middle ear infections involving the tonsillar fossa?
The Glossopharyngeal
Which ganglion is responsible for the sensory nerve fibers innervating the taste buds associated with the circumvallate papillae?
The Glossopharyngeal ganglion
What muscle is responsible for opening the Roma glottidis?
The posterior cricoarytenoid muscle
What muscles elevate the larynx?
Geniohyoid Mylohyoid Palatopharyngeus Salpingopharyngeus Sternothyroid Thyrohyoid
What nerve innervates the intrinsic muscle of the larynx?
The recurrent branch (inferior) of the laryngeal nerve
What nerve innervates the larynx superior to the true vocal cords?
The internal branch of the superior laryngeal nerve
