Cranial nerves Flashcards
Cranial nerve 1
nn. olfactorii
Cranial nerve 2
n.opticus
Cranial nerve 3
n. oculomotorius
Cranial nerve 4
n. trochlearis
Cranial nerve 5
n. trigeminus
Cranial nerve 6
n. abducens
Cranial nerve 7
n. facialis
Cranial nerve 8
n. vestibulocochlearis
Cranial nerve 9
n. glossopharyngeus
Cranial nerve 10
n. vagus
Cranial nerve 11
n. accessorius
Cranial nerve 12
n. hypoglossus
Name and number of sensory only nerves
- nn.olfactorii
- n. opticus
- n. vestibulocochlearis
name and number of motor only nerves
- n. oculomotorius
- n. trochlearis
- n. abducens
- n.accessorius
- n.hypoglossus
name of cranial nerves that are both sensory and motor
- n.trigeminus
- n.facialis
- n.glossopharynegeus
- n.vagus
Function of 1. nn.olfactorii
Sense of smell
What part of the encephalon (brain) is cranial nerve 1 (nn.olfactorii) from.
Where does it go
Telencephalon
Lamina cribrosa/bulbus olfactorius
(os ethmoidale)
What is the function of cranial nerve 2 (n. opticus)
Sense of sight
What part of the encephalon (brain) is cranial nerve 2 (n.opticus) from
Where does it go through
Diencephaon
Canalis opticus
What is the function of cranial nerve 3 (n. oculomotorius)
movement of the eyeballs
What part of the encephalon (brain) is cranial nerve 3 (n. oculomotorius)
Where does it go through
mesencephalon
fissura orbitalis
What is the function of cranial nerve 4 (n. trochlearis)
movement of the eyeballs
What part of the encephalon (brain) is cranial nerve 4 (n. trochlearis) come from
Where does it go through
Mesencephalon
fissura orbitalis
What is the function of cranial nerve 5 (n.trigeminus)
sensory info from the face
What part of the encephalon (brain) is cranial nerve 5 (n.trigeminus) come from
metencephalon
Name the 3 branches of cranial nerve 5
n. opthalmicus
n. maxillaris
n. mandibularis
What is the first branch of cranial nerve 5 (n.trigeminus). What is its function. What does it pass through.
n. opthalmicus
Func- takes sensory innervation from the eye
Pass- fissura orbitalis
What is the second branch of cranial nerve 5 (n.trigeminus). What is its function. What does it pass through.
n. maxillaris
Func- sensory fibres for the structures on the head
Pass- fissura orbitalis, foramen rotundum, canalis infraorbitalis.
What is the third branch of cranial nerve 5 (n.trigeminus). What is its function. What does it pass through.
n. mandibularis
Func
-sensory fibres for structures on the head
- motor fibres of muscles of mastication
passes through foramen lacerum (foramen mentale)
n. trigeminus contains n.lingualis, what is its function
sense of taste
What is the function of cranial nerve 6 (n.abducens)
movement of eyeball
What part of the encephalon (brain) is cranial nerve 6 (n.abducnes) come from
Where does it go through
Medulla oblongata
Fissura orbitalis
What is the function of cranial nerve 7 (n. facialis)
Movement of facial muscles
Motor- innervate mimic muscles
Sensory- innervate lingual mucosa
Parasympathetic innervate lacrimal glands, nasal glands, palate muscosa, sublingual gland, mandibular gland
(Closes eye)
What part of the encephalon (brain) is cranial nerve 7 (n.facialis) come from
Where does it go through
Medulla oblongata
Foramen stylomastoideum, fissura peterotympanica
what is the function of cranial nerve 8 (n. vestibulocochlearis
n. vestibularis - balance
n. coccylearis - hearing
What part of the encephalon (brain) is cranial nerve 8 (n. vestibulocochlearis) come from
Medulla oblongata
What is the function of cranial nerve 9 (n. glossopharyngeus)
Swallowing
Sensory- ramus lingualis
Motor ramus pharyngeus
What part of the encephalon (brain) is cranial nerve 9 (n.glossopharyngeus) come from?
Where does it go through?
Medulla oblongata
Foramen lacerum
What is the function of cranial nerve 10 (n.Vagus)
Swallowing
What is the function of cranial nerve 10 (n.Vagus)
Swallowing
What part of the encephalon (brain) is cranial nerve 10 (n.vagus) come from
Where does it go through
Medulla oblongata
Foramen lacerum
What is the function of cranial nerve 11 (n. accessorius)
Motor for the neck
Moves muscles…
m. brachiocephalicus
m. omotransversarius
m.trapezius pars cervicalis
What part of the encephalon (brain) is cranial nerve 11 (n.accessorius) come from
Where does it go through
Medulla oblongata
Foramen lacerum
What is the function of cranial nerve 12 (n. hypoglossus)
Movement of tongue
What part of the encephalon (brain) is cranial nerve 12 (n. hypoglossus) come from
Where does it go through
Medulla oblongata
Canalis nervi hypoglossus
What nerves contain parasympathetic fibers
(Name and Number)
-3. n. oculomotorius
-7. n. facialis
-9. n.glossopharyngeus
-10. n.vagus