Term
| What is the apparent origin for the facial nerve? |
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Definition
| The caudal border of the pons (lateral to the reccess between the olive and the restiform body) |
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Term
| What is the name of the small sensory root to the facial nerve? |
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Definition
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Term
| How many nuclei does the facial nerve possess? |
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Definition
| 3! (2 origin, 1 termination) |
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Term
The Nucleus of the facial nerve
1. what does it supply
2. location |
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Definition
1. supplies somatic efferent fibers to the facial muscles.
2. lies in the reticular formation of the caudal part of the pons and ventromedial to the pontine nucleus of the trigeminal nervee. |
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Term
| Where would you find the superior salivatory nucleus? |
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Definition
| in the reticular formation |
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Term
| What does the superior salivatory nucleus do? |
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Definition
| it sends visceral motor fibers to join the sensory root. |
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Term
| Where would you find the upper part of the nucleus of the tractus solitarius of the medulla oblongata? |
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Definition
| In the medulla oblongata dorsomedial to the spinal nucleus of the trigeminal nerve. |
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Term
| So, what can you tell me about the upper part orf the nucleus tractus solitarius of the medulla oblongata (other than its location) |
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Definition
Receives afferent fibers from the sensory root.
Sends efferent fibers to ventral group of nuclei of the lateral part of the thalamus of the opposite side. |
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Term
| What makes up the nervus intermedius? |
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Definition
1) a central process of the unipolar cells of the genicular ganglion (passing through the internal acoustic meatus)
2. Efferent preganglionic parasympathetic fibers for the submandibular, sublingual, salivary glands, the lacrimal gland, and pharyngeal, nasal, and palatine glands. |
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Term
| The facial nerve communicates with the ___________ N. in the intracranial area. |
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Definition
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Term
| What does the facial nerve communicate with through the genicular ganglion? |
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Definition
1.Pterygopalatine ganglion (through greater petrosal nerve)
2. Otic Ganglion (through lesser petrosal nerve
3. Middle meningeal sympathetic plexus |
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Term
| Facial branches of communication within the facial canal |
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Definition
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Term
| Facial N. branches of communication at exit from stylomastoid foramen. |
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Definition
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Term
| Facial nerve communications with the lesser occipital nerve occur |
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Definition
| with the posterior auricular ns |
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Term
| Facial nerve communicates with what nerve all over the face? |
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Definition
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Term
| Facial nerve communicates with what in the cervical region? |
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Definition
| the transverse (cutaneous) cervical nerve. |
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Term
| Where does the Greater Petrosal Nerve arise? |
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Definition
| from the genicular ganglion. |
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Term
| What fibers does the greater petrosal nerve carry? |
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Definition
Taste fibers from the palate
Preganglionic parasympathetic fibers for the lacrimal, nasal, and palatine mucosal glands (secretomoter fibers come from facial nerve, superior salivatory nucleus) |
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Term
| What nerve joins the greater petrosal nerve in the foramen lacerum? |
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Definition
| the deep petrosal nerve (with their powers combined they become the nerve of the pterygoid canal) |
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Term
| Tell me about the lesser petrosal nerve |
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Definition
It is conveyed to the otic ganglion from the auricular branch of the vagus nerve
A branch from the facial nerve joins the lesser petrosal near the genicular ganglion |
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Term
| Tell me two things about the external petrosal nerve |
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Definition
it comes from the sypathetic plexus on the middle meningeal artery.
It joins the genicular ganglion. |
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Term
| Branches of the facial nerve within the facial canal |
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Definition
nerve to stapedius
Chorda Tympani |
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Term
| Branches of the facial nerve at the exit of the stylomastoid foramen |
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Definition
Posterior auricular
Digastric
Stylohyoid |
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Term
| Branches of the facial nerve on the face |
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Definition
temporal
zygomatic
buccal
marginal mandibular
cervical nerves |
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Term
| What N. does chorda tympani join with? |
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Definition
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Term
| What efferent fibers does chorda tympani N. carry? |
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Definition
| efferent preganglionic parasympathetic (secretomotor) fibers to submandibular ganglion. (relayed to submandibular and sublingual glands with postganglionic fibers) |
|
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Term
| what are the majority of fibers carried in chorda tympani? |
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Definition
| afferent from the anterior, presulcal part of the tongue |
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Term
| Before chorda tympani joins with the lingual nerve, what is it joined by? |
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Definition
| A small branch from the otic ganglion |
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Term
| What does the Posterior Auricular Nerve Communicate with? |
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Definition
| Posterior branch of the great auricular nerve and with the lesser occipital nerve. (it is joined by a branch from the auricular branch of vagus) |
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Term
| What does the Posterior Auricular Nerve become? |
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Definition
it divides into an auricular and an occipital n.
(the auricular n suppplis the auricularis posterior and the intrinsic muscles of the cranial surface of the auricle)
(The occipital nerve supplies the occipital belly of the occipitofrontalis) |
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Term
| The digastric joins what nerve? |
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Definition
The glossopharyngeal N.
(it innervates the posterior belly of the digastric muscle) |
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Term
| The Stylohyoid N. frequently arises with what nerve? |
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Definition
the digastric n.
(it innervates the stylohyoid muscle, which is pierced by the tendon of digastric) |
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Term
| What do the temporal n, facial cross to get to the temporal region? |
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Definition
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Term
| What do the temporal nerves, facial n innervate? |
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Definition
the intrinsic muscle on the lateral surface of the auricle, the anterior and superior auricular muscles,* the frontal belly of the occipitofrontalis, the orbicularis occuli, and corrugator supercilii
(*after being joined with zygomaticotemporal nerve, maxillary n and auriculotemporal, mandibular n) |
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Term
| Beside the zygomaticotemporal n of the maxillary n and the auriculotemporal n of the mandibular n what nerves does the temporal n of facial join with? |
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Definition
| supraorbital and lacrimal nerves of the ophthalmic nerve |
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Term
| What are the intrinsic muscles of the auricle? |
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Definition
helicis major
helicis minor
tragicus
antitragicus
transvers auriculae
oblique auriculae |
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Term
| What do the zygomatic nerves of facial innervate? |
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Definition
| the orbiicularis oculi (they join the lacrimal nerve and the zygomaticofacial nerve of the maxillary nerve) |
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Term
| What do the buccal nerves supply? |
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Definition
The superficial branches supply Procerus (join with the infratrochlear and external nasal nerves)
The deep branches supply the zygomaticus major, levetor labii superioris, levator anguli oris, zygomaticus minor, levator labii superioris alaeque nasi, and small muscles of the nose (they form the infraorbital plexus with superior labial nerve of the infraorbital nerve)
The Lower deep branches supply the buccinator and orbicularis oris (they join with the buccal nerve of the mandibular nerve) |
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Term
| How does the marginal mandibular nerve run? |
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Definition
| below the angle of the mandible under cover of the platysma. |
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Term
| What supplies the risorius and the muscles of the lower lip and chin? |
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Definition
| Why the marginal mandibular nerve does of course. |
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Term
| What nerve issues from the lower part of the parotid gland? |
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Definition
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Term
| What nerves run under the cover of the platysma? |
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Definition
Cervical Nerve, Facial N
Marginal Mandibular, Facial |
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Term
| What n supplies the platysma? |
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Definition
| The cervical nerve, Facial |
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Term
| What n does the cervical n, facial communicate with? |
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Definition
| the transverse cutaneous cervical nerve |
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Term
| What does the Submandibular ganglion lie on? |
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Definition
| It lies on the upper part of the hyoglossus. |
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Term
| The Submandibular ganglion connected functionally with: |
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Definition
| the facial nerve and its chorda tympanic nerve (as a peripheral ganglion of the parasympathetic system) |
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Term
| What is the path of the parasympathetic root to the submandibular ganglion? |
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Definition
1) From the superior Salivatory Nuceus
2) Runs in the facial, chorda tympani, and lingual nerve
3) reaches submandibular gang. |
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Term
| Tell me about the postganglionic fibers of the submandibular ganglion. |
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Definition
| they are secretomotor fibers to the submandibular, sublingual, and anterior lingual glands. |
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Term
| What causes facial paralysis associated with the facial nerve? |
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Definition
Inflamation of the facial nerve close to the sylomastoid foramen
(known as Bell's Palsy) |
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