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Flashcards in LA anatomy Deck (38)
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1

what is the largest cranial nerve?

trigeminal

2

where do the 3 divisions of the trigeminal nerve arise?

trigeminal ganglion

3

in which region of the skull does the trigeminal ganglion lie?

cranial fossa

4

the ophthalmic division of the trigeminal nerve exits the cranial fossa through?

superior orbital fissure

5

the maxillary division of the trigeminal nerve exits the cranial fossa through?

foramen rotundum

6

the mandibular division of the trigeminal nerve exits the cranial fossa through?

foramen ovale

7

after exiting the skull via the superior orbital fissure, where does the ophthalmic division of the trigmeninal nerve enter?

the orbit

8

after exiting the skull via the foramen rotundum, where does the maxillary division of the trigmeninal nerve enter?

ptergopalatine fossa

9

after exiting the skull via the foramen ovale, where does the mandicular division of the trigmeninal nerve enter?

infra temporal fossa

10

what is the function of the trigeminal nerve as a whole?

carry general sensory innverations for most of the head and motor innveravtion to the muscles of mastication

11

is the ophthalmic nerve sensory or motor?

sensory

12

the ophthalmic nerve provides innervations to where?

upper eyelid, cornea, conjunctiva, forehead, scalp and part of nasal cavity

13

is the maxillary nerve sensory or motor ?

sensory

14

the maxillary nerve provides innervations to?

lower eyelid, cheek, side of nose, part of nasal cavity, upper lip, hard and soft palate, maxillary teeth and gingivae

15

is the mandibular nerve sensory or motor?

both

16

the mandibular nerve provides sensory innervations to?

anterior 2/3 tongue (general sensation), tempoauricular skin, side of nose, chin and mandibular teeth

17

what is the motor function of the mandibular nerve?

muscles of mastication

18

the ophthalmic nerve can be divided into 3 major branches, name these?

frontal nerve
nasocilliary nerve
lacrimal nerve

19

nasocilliary branch of the ophthalmic nerve branches into what 3 nerves?

long cilliary nerves
infratrochlear nerve
anterior ethmoidal nerve

20

fibres from both the ophthalmic nerve and oculomotor synapse in the cilliary ganglion, which carries sympathetic fibres and which carries parasympathetic fibres?

ophthalmic - sympathetic
occulumotor - parasympathetic

21

the frontal nerve division of the ophthalmic nerve branches further into which 2 nerves?

supraorbital and supratrochlear

22

the maxillary division of the the trigemnial nerve enters the pterygopalatine fossa through the foramen rotundum and branches into which 5 branches which exit the pterygopalatine fosses via different routes?

greater and lesser palatine nerves
posterior superior alveolar nerve
infra orbital nerve
nasopaltine nerve
pharyngeal nerve

23

greater and lesser palatine nerves of the maxillary division exit the ptergopalatine fossa via?

palatine canal

24

posterior superior alveolar nerve of the maxillary division exits the ptergopalatine fossa via?

pterygomandibular fissure

25

infra orbital nerve of the maxillary division exits the ptergopalatine fossa via?

inferior orbital fissure

26

nano palatinenerve of the maxillary division exits the ptergopalatine fossa via?

sphenopalatine fossa

27

pharyngeal nerve of the maxillary division exits the ptergopalatine fossa via?

palatovaginal canal

28

the mandibular nerve is divided into anterior and posterior trunks, what is the function of the anterior trunk?

motor supply to 4 muscles of mastication
buccal branch provides sensory innervation to cheek

29

the mandibular nerve is divided into anterior and posterior trunks, what is the function of the posterior trunk?

3 main sensory branches - auricolutemporal nerve, inferior alveolar, lingua nerve
motor fibres to mylohyoif muscles and anterior belly of digastric

30

name the 4 major branches of the mandibular nerve?

auriculotemporal
inferior alveolar
lingual
buccal