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71 Cards in this Set
- Front
- Back
what are the components of CN I?
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Olfactory
SVA (SSA?) |
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What are the components of CN II?
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Optic
SSA (S for sight) |
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What are the components of CN III?
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Occulomotor
GSE (for extraocular muscles) GSA (for extraoccular muscle proprioceptors) GVE (for intraocular muscles which originate from Branchial arch |
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What are the components of CN IV?
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Trochlear
GSE (superior oblique innervation) GSA (SO proprioceptor) |
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What are the components of CN V?
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Trigeminal
GSA (general sensation for touch, pain, heat, etc. skin so somatic) SVE (motor of masticatory muscles which arise from branchial cleft) (only V3 has this) |
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What are the components of CN VI?
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Abducent
GSE GSA innervation and proprioception of lateral Rectus extraoccular muscle |
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What are the components os CN VII?
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Facial
SVE (motor for facial muscles which arise out of branchial cleft 2) SVA (taste for front 2/3 of tongue) GVE (glandular innervation) GSA (proprioception of facial muscles) |
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What are the components of CN VIII?
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Vestibulocochlear
SSA (special hearing and equilibrium somatic bc ear canal is not in branchial arch, its from a pouch and groove) |
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What are the components of CN IX?
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Glossopharyngeal
SVE (innervation of stylopharyngeus) SVA (taste to post 2/3 of tongue) GVE (parotid and salivary glands) GSA (pain and temp sensation to post 2/3 tongue and pharynx) GVA (chemo and baro-reception from carotid bodies) |
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What are the components of CN X?
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Vagus
SVE (motor innervation of branchiomeric muscles in pharynx) GVE (minor salivary glands, GI and bronchiolar mucosa and heart) SVA (scattered taste buds on epiglottis) GVA (chemo and baroreceptors from carotid and aortic bodies) GSA (pain and temp from lower pharynx and tympanic membrane via auricular branch) |
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What are the components of CN XI?
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Accessory
SVE? (maybe branchiometric muscles of lower pharynx) GSE (innervation of trapezius and sternocleidomastoid) GSA (proprioception of trap and sternoc...) |
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What are the components of CN XII?
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Hypoglossal
GSE (innervation of intrinsic and extrinsic muscles of tongue) GSA (proprioception from muscles) |
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What are the components of chorda tympani?
What does it join with and what are the components of that nerve when it does? |
Chorda = GVE (glands) and SVA (taste of ant. 2/3)
Joins with lingual branch of V3 which has GSA (general sensation for ant. 2/3rd of tongue) |
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exit for CN I?
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olfactory foramina in ethmoid cribriform plate
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exit for CN II?
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optic canal of sphenoid
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exit for CN III?
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Superior orbital fissure of sphenoid
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exit for CN IV?
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SOF of sphenoid
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exit for CN V1?
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superior orbital Fissure of sphenoid
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exit for CN V2?
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Foramen Rotundum
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exit for CN V3?
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Foramen Ovale
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exit for CN VI?
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superior orbital fissure of Sphenoid
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exit(s) for CN VII?
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Stylomastoid foramen
Internal auditory meatus Chorda tympani - petrotympanic (squamotympanic) fissure |
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exit for CN VIII?
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Internal auditory meatus
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exit for CN IX?
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Jugular foramen
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Exit for CN X?
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Jugular foramen
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Exit for CN XI? entrance?
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Jugular foramen
entrance - spinal accessory enters the cranial vault through the foramen magnum |
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Exit for CN XII?
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hypoglossal canal
(next to foramen magnum) |
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What muscles are found in the infratemporal fossa?
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Lateral pterygoid
Medial pterygoid Temporalis (lower part) |
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what nerves are found in Infratemporal fossa?
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branches of V3
Chorda tympani (branch of VII) |
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what arteries are found in Infratemporal fossa?
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branches of Maxillary artery
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what veins are found in infratemporal fossa?
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Maxillary vein
Pterygoid venous plexus |
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what does the Middle meningeal artery supply?
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dorsal surface of anterior CF and Middle CF
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how many branches does the maxillary artery have? what are they split into?
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15
split into thirds |
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what are the five branches of the first third of maxillary artery?
what is another name for the first third? |
Deep Auricular a
Anterior tympanic a Middle Meningeal a Accessory Meningeal a Inferior alveolar a another name = mandibular third |
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Where does the Deep auricular artery go from the infratemporal fossa?
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Internal auditory meatus
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where does the anterior tympanic artery go from the infratemporal fossa?
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petrotympanic fissure
(runs by the chorda tympani there) |
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where does the Middle meningeal artery go from the Infratemporal fossa?
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Foramen spinosum
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where does the accessory meningeal artery go from the Infratemporal fossa?
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foramen ovale (Ama is only sometimes found)
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where does the inferior alveolar artery go from the infratemporal fossa?
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Mandibular foramen (inferior alveolar foramen) into the mandibular canal
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what are the five branches of the second third of the maxillary artery?
what is another name for the 2nd third? |
Posterior deep temporal
Pterygoid arteries Anterior deep temporal Masseteric Buccal another name = pterygoid third |
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which arteries of the pterygoid portion of the maxillary artery can be seen if you pull temporalis up?
which cannot usually be seen? |
Posterior deep temporal and anterior deep temporal can be seen
Pterygoid arteries usually cannot be seen |
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What are the five branches of the last third of the maxillary artery?
What is another name for this third? why? |
Posterior superior alveolar
pterygoid (vidian) Sphenopalatine Descending palatine Infraorbital Two other names = terminal or pterygopalatine portion because it's found in the pterygopalatine fossa |
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what are the branches off the sphenopalatine artery?
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Posterior nasal branches
Nasopalatine branches |
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where does the infraorbital artery exit the cranial vault?
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infraorbital foramen
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where does the sphenopalatine branch of maxillary artery leave from? to where? through where? what are its two branches?
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leaves from pterygopalatine fossa
Goes to Nasal canal Through Sphenopalatine foramen Two branches are posterior nasals and nasopalatine branches |
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what is the order of the branches of the 1st third of maxillary artery?
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Deep temporal
Anterior tympanic Middle Meningeal Accessory meningeal Inferior alveolar |
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what is teh order of the branches of the 2nd third of maxillary artery?
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Masseteric
Posterior Deep temporal pterygoid arteries Anterior Deep temporal Buccal |
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what is the branch off the pterygoid (vidian) artery (artery of the pterygoid canal?
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pharyngeal artery
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what does the posterior superior alveolar artery supply up to?
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from the back of maxilla to 2nd molar
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what does the pterygoid venous plexus drain into?
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Maxillary veins (very short)
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What does the maxillary veins drain into?
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retromandibular vein
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What two veins come together to make up the common facial vein?
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facial vein
retromandibular vein |
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what does the common facial vein drain into?
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Internal jugular
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what vein drains into the retromandibular vein from the back of the head?
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occipital vein
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where can you easily locate the internal jugular vein?
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under the sternocleidomastoid
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other than the internal jugular, where else can blood from the retromandibular vein drain?
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external jugular (only sometimes and usually not all of the drainage)
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what is the only branch off the inferior alveolar n?
what is the inferior alveolar n a branch of? |
mylohyoid n.
branch of V3 (mandibular) |
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what are the muscles that the mylohyoid n. innervates? what type of fibers?
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Mylohyoid
Anterior belly of digastricus SVE (bc V3 is SVE and GSA) |
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Name all 8 branches of V3.
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Auriculotemporal
Inferior Alveolar (w/ mylohyoid) Lingual Long buccal muscular branches Temporal Masseteric Pterygoid |
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what travels with the auriculotemporal N?
What is the auriculotemporal a branch of? |
GVE postganglionic fibers from otic ganglion (CN IX) to the parotid gland
Auriculotemporal N. is a branch of V3 |
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what forms a "buttonhole" around the middle meningeal artery?
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the auriculotemporal N
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what type of fibers does the Mylohyoid nerve carry?
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SVE (because they originated in branchial arch
GSA (sensory) |
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what branch of CN IX goes to the otic ganglion?
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lesser superficial petrosal nerve
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what are the muscles innervated by the Mandibular N. (V3)?
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4 muscles of mastication - temporalis masseter lateral and medial pterygoid
Anterior belly of digastricus Mylohyoid Tensor palati Tensor tympani |
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what two maxillary n. branches go through the inferior orbital fissure from the pterygopalatine fossa?
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1. Infraorbital n.
2. Zygomatic n. |
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what nerve provides innervation of the carotid bodies in the carotid sinus?
what type of nerve fibers are these? |
IX (Glossopharyngeal)
GVA |
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what nerve provides innervation of the walls of the carotid sinus?
what type of nerve fibers are these? |
X (vagus) -also innervates walls of gi tract, esophagus, lungs, and hearts
GVA |
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which bone is attached to the tympanic membrane?
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Malleus (Malleus = Membrane)
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where does the chorda tympani go through in skull? from where, to where?
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from middle ear canal
through the petrotympanic fissure to the infratemporal fossa |
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what are teh two portions (anterior and posterior) of the brain stem and spinal cord? what splits them? which is afferent? which is efferent?
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Anterior = Basal = Efferent
Posterior = Alar = Afferent split by the sulcus limitans |
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which nerve fiber type innervates the muscles that originate from the branchial arches?
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SVE
BA I = CN V BA 2 = CN VII BA 3 = CN IX BA 4 and 6 = CN X and XI |