Week 7 (2) Flashcards
where does the mandibular nerve exit the cranial cavity
foramen ovale
which bone is the foramen ovale in
sphenoid bone
what branch comes off of the main trunk of the mandibular nerve after going through the foramen ovale
nerve to medial pterygoid
what happens after the nerve to medial pterygoid branches off
the mandibular nerve splits into anterior and posterior division
what nerves (in correct order) come off of the anterior division of the mandibular nerve
- nerve to masseter
- deep temporal nerves
- nerve to lateral pterygoid muscle
after giving off the nerve to lateral pterygoid, what is the anterior division of the mandibular nerve called (continuation of the anterior division)
buccal nerve
what is the course of the nerve to masseter
comes off of anterior division soon after branching, runs laterally, through the mandibular notch and enters deep aspect of the masseter
what is the course of the deep temporal nerves
branches to temporalis muscle, approach muscle from its medial side, go into deep aspect of the muscle
what is the last branch of the anteiror division of the mandibular nerve before it is called the buccal nerve
nerve to lateral pterygoid
Desribe the buccal nerve
the continuation of the anterior division once its motor supply has come off. Often called the long buccal nerve just because it is long, gives off cutaneous and mucosal branches
what are the branches of the posterior division of the mandibular nerve
- auriculotemporal
- inferior alveolar
- lingual
what does the lingual nerve supply
Purely sensory to its own side:
- anterior 2/3 of tongue
- floor of mouth
- lingual gingiva in lower jaw
what does the lingual nerve run close to
3rd molar, close relationship to the bone
what nerve joins the lingual nerve
chorda tympani
what is the chorda tympani a branch of
the facial nerve
where does the chorda tympani join the lingual nerve
high up in the infratemporal fossa
what is the role of the chorda tympani
fibres containing info about taste from the anterior 2/3 of the tongue are initially in the lingual nerve but then run through the chorda tympani to the facial nerve in the brainstem
where does the chorda tympani join the facial nerve
inside of the upper part of the ear drum at the middle ear
in addition to conveying taste sensation, what does the chorda tympani also do
also carries pre-ganglionic sympathetic fibres that make the sublingual and submandibular glands secrete
what branches off from the inferior alveolar nerve before it enters the bone
nerve to mylohoid and anterior belly of digastric
what is the only motor branch in the posterior division
nerve to mylohoid and anterior belly of digastric
what hole does the inferior alveolar nerve go through to get into the mandible
mandibular foramen
when does the inferior alveolar nerve give off the mental nerve
at premolar level
what does the mental nerve supply
- skin of chin
- skin and mucosa of lip
what is the continuation of the inferior alveolar nerve called after giving off the mental nerve
incisive branch
what goes through the foramen spinosum
middle meningeal artery
what is the middle meningeal artery a branch of
maxillary artery
what nerve forms a loop around the middle meningeal artery
auriculotemporal
what does the auriculotemporal artery supply
- sensation to the TMJ
- skin anterior to the ear
