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m2 nente anatomy > 4. extra summary of cranial nerves > Flashcards

4. extra summary of cranial nerves Flashcards

1
Q

CN1

  • components
  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A

Special sensory (olfaction)

  • Olfactory epithelium (olfactory cells)
  • Foramina in cribriform plate of ethmoid bone
  • Smell from nasal mucosa of roof of each nasal cavity and superior sides of nasal septum and superior concha
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2
Q

CN2

  • components
  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A

Special sensory (vision)

  • Retina (ganglion cells)
  • Optic canal
  • Vision from retina
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3
Q

CN3

  • components
  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A

Somatic motor

  • Midbrain (nucleus of oculomotor nerve)
  • Superior orbital fissure
  • Motor to superior rectus, inferior rectus, medial rectus, inferior oblique, and levator palpebrae superioris muscles; raises superior eyelid; rotates eyeball superiorly, inferiorly, and medially

Visceral motor

  • Presynaptic: midbrain (Edinger-Westphal nucleus)
  • Postsynaptic: ciliary ganglion
  • Superior orbital fissure
  • Parasympathetic innervation to sphincter pupillae and ciliary muscle; constricts pupil and accommodate lens of eye
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4
Q

CN4

  • components
  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A

Somatic motor

  • midbrain (nucleus of trochlear nerve)
  • superior orbital fissure
  • Motor to superior oblique to assist in turning eye inferolaterally (or inferiorly when adducted)
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5
Q

CNV1

  • components
  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A

Somatic (general) sensory

  • trigeminal ganglion
  • superior orbital fissure
  • Sensation from cornea, skin of forehead, scalp, eyelids, nose, and mucosa of nasal cavity and paranasal sinuses
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6
Q

CNV2

  • components
  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A

Somatic (general) sensory

  • trigeminal ganglion
  • foramen rotundum
  • Sensation from skin of face over maxilla including upper lip, maxillary teeth, mucosa of nose, maxillary sinuses, and palate
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7
Q

CNV3

  • components
  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A

Somatic (general) sensory

  • trigeminal ganglion
  • foramen ovale
  • Sensation from the skin over mandible, including lower lip, side of head, mandibular teeth, temporomandibular joint, mucosa of mouth, and anterior two thirds of tongue

somatic (branchial) motor

  • pons
  • foramen ovale
  • Motor to muscles of mastication, mylohyoid, anterior belly of digastric, tensor veli palatini, and tensor tympani
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8
Q

CN6

  • components
  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A

Somatic motor

  • Pons (nucleus of abducent nerve)
  • Superior orbital fissure
  • Motor to lateral rectus to turn eye laterally
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9
Q

CN7 Somatic branchial motor

  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A
  • Pons (motor nucleus of facial nerve)
  • Internal acoustic meatus, facial canal, and stylomastoid foramen
  • Motor to muscles of facial expression and scalp; also supplies stapedius of middle ear, stylohyoid, and posterior belly of digastric
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10
Q

CN7 Special sensory (taste)

  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A
  • Geniculate ganglion
    Synapse: nuclei of solitary tract
  • Internal acoustic meatus, facial canal, and stylomastoid foramen
  • Taste from anterior two thirds of tongue and palate
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11
Q

CN7 somatic (general) sensory

  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A
  • Geniculate ganglion
    Synapse: sensory nucleus of trigeminal nerve
  • Internal acoustic meatus, facial canal, and stylomastoid foramen
  • General sensation from skin of both aspects of auricle
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12
Q

CN7 visceral motor

  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A
  • Presynaptic: pons (superior salivatory nucleus)
  • Postsynaptic: pterygopalatine ganglion and submandibular ganglion
  • Internal acoustic meatus, facial canal, and stylomastoid foramen
  • Parasympathetic innervation to submandibular and sublingual salivary glands, lacrimal gland, and glands of nose and palate
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13
Q

CN8 vestibular

  • components
  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A 
special sensory (balance) 
- Vestibular ganglion
Synapse: vestibular nuclei
- Internal acoustic meatus
-  Vestibular sensation from semicircular ducts, utricle, and saccule related to position and movement of head
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14
Q

CN8 cochlear

  • components
  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A 
Special sensory (hearing)
- Spiral ganglion
Synapse: cochlear nuclei
- Internal acoustic meatus
-  Hearing from spiral organ
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15
Q

CN9 Somatic branchial motor

  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A
  • Medulla (nucleus ambiguus)
  • Jugular foramen
  • Motor to stylopharyngeus to assist with swallowing
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16
Q

CN9 visceral motor

  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A
  • Presynaptic: medulla (inferior salivatory nucleus)
  • Postsynaptic: otic ganglion
  • Jugular foramen
  • Parasympathetic innervation to parotid gland
17
Q

CN9 Special sensory (taste)

  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A
  • Inferior sensory ganglion (nuclei of solitary tract)
  • Jugular foramen
  • Taste from posterior third of tongue and pharynx
18
Q

CN9 somatic (general) sensory

  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A

Superior sensory ganglion (sensory nucleus of CN V)

  • Jugular foramen
  • Posterior auricle, tragus, posterior 1/3 of tongue, soft palate and pharynx

Inferior sensory ganglion (sensory nucleus of CN V)

  • Jugular foramen
  • Tympanic cavity and membrane, pharyngo-tympanic tube, mastoid cells
19
Q

CN9 visceral sensory

  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A
  • Inferior sensory ganglion (nuclei of solitary tract)
  • Jugular foramen
  • Carotid body (chemoreceptors) and sinus (baroreceptor)
20
Q

CN10 Somatic branchial motor

  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A
  • Medulla (nucleus ambiguus)
  • Jugular foramen
  • Motor to constrictor muscles of pharynx, intrinsic muscles of larynx, muscles of palate (except tensor veli palatini), and striated muscle in superior two thirds of esophagus
21
Q

CN10 visceral motor

  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A
  • Presynaptic: medulla
    Postsynaptic: intrinsic ganglia in, on, or near viscera
  • Jugular foramen
  • Parasympathetic innervation to smooth muscle of trachea, bronchi, digestive tract, and cardiac muscle
22
Q

CN10 visceral sensory

  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A
  • Inferior ganglion
    Synapse: nuclei of solitary tract
  • Jugular foramen
  • Visceral sensation from base of tongue, pharynx, larynx, trachea, bronchi, heart, esophagus, stomach, and intestine
23
Q

CN10 Special sensory (taste)

  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A
  • Inferior ganglion
    Synapse: nuclei of solitary tract
  • Jugular foramen
  • Taste from epiglottis and palate
24
Q

CN10 somatic (general) sensory

  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A
  • Superior ganglion
    Synapse: sensory nucleus of trigeminal nerve
  • Jugular foramen
  • Sensation from auricle, external acoustic meatus, and dura mater of posterior cranial fossa
25
Q

CN11

  • components
  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A

Somatic motor

  • cervical spinal cord
  • jugular foramen
  • Motor to sternocleidomastoid and trapezius
26
Q

CN12

  • components
  • location of nerve cell bodies (and site of synapse)
  • cranial exit
  • function
A

somatic motor

  • motor
  • hypoglossal canal
  • Motor to intrinsic and extrinsic muscles of the tongue (except palatoglossus)

m2 nente anatomy (24 decks)

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