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Anatomia > Revision for written test: cranial nerves > Flashcards

Revision for written test: cranial nerves Flashcards

1
Q

Which cranial nerves innervate the eye?

A

N. Opticus (2)
N. Oculomotorius (3)
N. Trochlearis (4)
N. Trigeminus (5)
N. Abducens (6)
N. Facialis (7)

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2
Q

N. Opticus: (in case of eye)
1. What type of fibres?
2. What, from where to where?

A
  1. Sensory
  2. Visual info from photoreceptors of retina, through canalis opticus to thalamic nuclei in interbrain
    >Sensory data is processed
    in visual cerebral cortex in
    occipital lobe
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3
Q

N. Oculomotorius: (in case of eye)
1. What type of fibres?
2. What, from where to where?
3. Supplies what?

A
  1. Motor & parasympathetic
    sensory fibres
  2. From tegmentum of midbrain through Fissura orbitalis (car, eq) / Foramen orbitorotundum (ru,su)
  3. Supplies recti, oblique & levator muscles of eye (motor)
    And sphincter pupillae & ciliary muscles of eye (parasympathetic sensory)
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4
Q

N. Trochlearis (in case of eye)
1. What type of fibres?
2. From where? Through what?
3. Supplies what?

A
  1. Motor fibres
  2. From tegmentum of midbrain, through Fissura orbitalis / Foramen orbitorotundum
  3. Innervates dorsal oblique muscles of eye & contralateral muscle
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5
Q

N. Trigeminus ( in case of eye)
1. What type of fibres?
2. From where through what
3. What branches?

A
  1. Sensory and motor
  2. From hindbrain, through fissura orbitalis / foramen orbitorotundum
  3. N. Ophthalmicus
    >Sensory info from eye
    N. Maxillaris
    >Sensory to lower eyelid
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6
Q

N. Abducens (in case of eye)
1. What type of fibres?
2. From where?
3. Supplies / innervates what?

A
  1. Motor
  2. From dorsal part of pons
  3. Controls movements of lateral rectus m. and retractor bulbi m. of eye
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7
Q

N. Facialis (in case of eye)
1. What type of fibres
2. From where, through what?
3. What branch?

A
  1. Sensory, motor & parasympathetic fibre
  2. From dorsal part of pons, through canalis nervus facialis and foramen stylomastoideum (according to Esta)
  3. N. auriculopalpebralis; eyelids
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8
Q

Which cranial nerves innervate the tongue?

A

N. Trigeminus (5)
N. Facialis (7)
N. Glossopharyngeus (9)
N. Vagus (10)
N. Hypoglossus (12)

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9
Q

N. Trigeminus (in case of tongue)
1. What type of fibres?
2. From where - through what?
3. Which branch and sub-branch

A
  1. Sensory, motor & parasympathetic fibres
  2. From hindbrain through foramen ovale (mandibular nerve)
  3. N. Mandibularis
    >N. Lingualis
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10
Q

N. Facialis (in case of tongue)
1. What type of fibres?
2. From where through what?
3. Supplies what?
4. Which part/ branch?

A
  1. Sensory, motor & parasympathetic
  2. From dorsal part of pons, through canalis nervus facialis + Foramen stylomastoideum
  3. Innervates muscles of tongue
  4. Chorda tympani joins n. lingualis
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11
Q

N. Glossopharyngeus (in case of tongue)
1. What type of fibres?
2. From where, through what?
3. Supplies what?
4. Which branch?

A
  1. Sensory, motor & parasympathetic fibres
  2. From medulla oblongata, through foramen jugulare / foramen lacerum
  3. Taste information + assists in swallowing
  4. Ramus lingualis
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12
Q

N. Vagus (in case of tongue)
1. What type of fibres?
2. From where, through what?
3. Supplies what?

A
  1. Sensory, motor & parasympathetic
  2. From medulla oblongata, through foramen jugulare / foramen lacerum
  3. Additional innervation to root of tongue
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13
Q

N. Hypoglossus (in case of tongue)
1. What type of fibres
2. From where, through what?
3. Supplies what?

A
  1. Motor fibres
  2. From medulla oblongata, through canalis nervi hypoglossi, (in eq through the guttural pouch)
  3. Extrinsic and intrinsic muscles of tongue + controls swallowing
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14
Q

Which cranial nerves innervate the ear?

A

N. Trigeminus
N. Facialis
N. Vestibulocochlearis
N. Glossopharyngeus
N. Vagus

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15
Q

N. Trigeminus (in case of ear)
1. What type of fibres?
2. From where, through what?
3. Which branch + sub-branch

A
  1. Sensory and motor
  2. From hindbrain; through foramen ovale (n. mandibularis)
  3. N. mandibularis
    >N. auriculotemporalis
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16
Q

N. Facialis (In case of ear)
1. What type of fibres?
2. From where, through what?
3. Which branches?

A
  1. Sensory, motor & parasympathetic
  2. Through porus acusticus internus, canalis nervi facialis + foramen stylomastoideum
  3. N. Stapedius, N. auricularis caudalis, N. auriculopalpebralis
17
Q

N. Vestibulocochlearis (in case of ear)
1. What type of fibres?
2. From where through what?
3. Which branches?

A
  1. Sensory fibres
  2. From trapezoid body, Sound & balance info from inner ear to brain, through porus acusticus internus
  3. N. Vestibularis + N. cochlearis
18
Q

N. Glossopharyngeus (in case of ear)
1. What type of fibres?
2. From where through what?
3. What branch?

A
  1. Sensory, motor & parasympathetic fibres
  2. From medulla oblongata, information from middle ear through foramen jugulare / foramen lacerum
  3. N. tympanicus
19
Q

N. Vagus ( In case of ear)
1. What type of fibres?
2. From where through what?
3. What branch?

A
  1. Sensory, motor & parasympathetic
  2. From medulla oblongata, through jugular foramen / foramen lacerum
  3. N. auricularis; skin on the inside of external ear
20
Q

N. Accessorius
1. What type of fibres
2. Through where?
3. What kind of branches?

A
  1. Motor fibres
  2. Through jugular foramen / foramen lacerum
  3. Ramus internus: communicates w/ vagal nerve
    Ramus externus: innervates trapezius, sternocephalicus + brachiocephalicus
21
Q

N. Olfactorius
1. What type of fibres
2. From where through what?
3. Does what?

A
  1. Sensory
  2. From olfactory bulb in telencephalon, through foramen cribform in ethmoid bone
  3. Scent information from olfactory epithelium to brain

Anatomia (10 decks)

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