Nasal Cavity, Oral Cavity, Palate Flashcards
What vessels pass through the sphenopalatine foramen to enter the nasal cavity?
Sphenopalatine artery & vein
What branch of CN V passes through the sphenopalatine foramen to enter the nasal cavity?
V2 Maxillary
What are the three reservoirs that drain the nasal cavity of blood?
superior sagittal sinus
Cavernous sinus
Pterygoid plexus (and dural sinuses)
At the end of the hard palate are four foramina that transmit the right and left greater & lesser __________ arteries from the nasal cavity to the oral cavity.
Palatine
GSA innervation of the nasal cavity is shared by two divisions of CN V. The __________ nerve (maxillary division of CN V) courses along the long axis of the vomer bone to reach the transverse incisive canal.
Nasopalatine
The nasopalatine n. supplies the GSA innervation to the posterior aspect of the _________ __________ and lateral wall of the nasal cavity.
Nasal septum
The ________ __________ nerve (ophthalmic division of CN V) innervates the anterior portion of the septum and lateral wall of the nasal cavity.
anterior ethmoidal
The ________ __________ artery courses with the anterior ethmoidal nerve to supply the anterior portion of the nasal septum and lateral wall.
Anterior ethmoidal artery
The ___________ artery (terminal branch of the maxillary artery) courses with the nasopalatine nerve and lateral nasal nerves to supply the posterior portion of the nasal septum and lateral wall.
Sphenopalatine artery
The sphenopalatine artery anastomoses with the greater ________ artery anteriorly at the incisive canal.
Greater palatine artery
Name the four paranasal air sinuses.
Frontal
Ethmoidal
Maxillary
Sphenoidal
Tensor veli palatini m. is innervated by:
V3 branch to medial pterygoid
What is the function of the tensor veli palatini?
Tense soft palate; open auditory tube
Where does the tensor veli palatini insert?
Palatine aponeurosis
What innervates the
Levator veli palatini
Vagus n. via pharyngeal plexus
What is the function of the levator veli palatini?
Elevate soft palate
Where does the levator veli palatini insert?
Palatine aponeurosis
Palatopharyngeus m. is innervated by:
Vagus N. via pharyngeal plexus
Palatopharyngeus m. inserts on the
Pharyngeal wall
Palatopharyngeus m. originates from the:
Palatine aponeurosis
What is the function of the palatopharyngeus m.?
Depress soft palate or elevate pharynx; narrow fauces
What is the innervation of the palatoglossus m?
Vagus n. via pharyngeal plexus
The palatoglossus m. inserts where?
Lateral tongue
What is the function of the palatoglossus m.?
Depress soft palate or elevate rear of tongue; narrow fauces
The musculus uvulae is innervated by:
Vagus n. via pharyngeal plexus
The muscularis uvulae functions to:
Thicken the central soft palate and shorten the uvula
The muscularis uvulae originates from the:
Central posterior hard palate (posterior nasal spine)
Sensory innervation of the mucosa of the pharynx is GSA. List the nerves involved.
Maxillary (CN V2), Glossopharyngeal (CN IX), and Vagus (CN X)
The sensory innervation of nasal and oral cavities is GSA and is mediated by branches of the _________ nerve.
Trigeminal (CN V) nerve
What is the GSA innervation to the nasopharynx?
CN V2
CN IX
What is the GSA innervation to the oropharynx?
CN IX
What is the GSA innervation to the laryngopharynx
CN X
Whereas the extrinsic muscles of the tongue move the tongue as a whole, the intrinsic muscles of the tongue alter the _______ of the tongue.
Shape
Somatic sensation and taste to the epiglottis is provided by cranial nerve:
CN X, Vagus
Somatic sensation to the posterior 1/3 of the tongue and lateral wall of the pharynx and pharyngeal tonsils as well as taste to the posterior 1/3rd of the tongue is provided by cranial nerve:
CN IX, Glossopharyngeal
Somatic sensation to the anterior 2/3 of the tongue is provided by:
Lingual nerve (branch from CN V3)
Taste from the anterior 2/3 of the tongue is provided by:
CN VII, Facial
The facial artery gives off this branch right before it crosses the mandible to ascend to the face.
Submental artery
Which major artery of the face runs deep to the zygomaticus major m.?
Facial artery
The occipital artery has a relationship with the __________ nerve.
Hypoglossal. CN XII
The posterior auricular a. branches from the ECA immediately above the _________ _________ of the digastric muscle.
Posterior belly of digastric m.
The posterior auricular a. supplies the following organs along its course:
Parotid gland, styloid and post. digastric mm., scalp above & behind ear
The posterior auricular a. can be located in dissection running parallel to this muscle:
Stylohyoid m.
