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Question 1

origin of VII

Answer 1

close to IX, run with common meningeal investment to meatus acusticus internus; both O ventrolateral medulla oblongata

1. Nucl. motoricus n. facialis -> somato-motor
2. Nucl salivarius rostralis -> somato-motor
3. Nucl. tractus spinalis n. trigemini -> somato-snesory
4. Nucl. tractus solitaii -> special sensory

for. stylomastoideus

Question 2

name the main branches of VII

Answer 2

1 - n. petrosus major
2 - n. stapedius -> m. stapedius(middle ear)
3 - r. auricularis internus
4 - n. auricularis caudalis
5 - n. auriculopalpbralis
6 - r. buccalis dorsale et ventrale
7. n. intermedius

Question 3

n. petrosus major

how does it run

Answer 3

PS: ggl. geniculi then:

nerve of pterigoid canal where it joins the n. petrosus prof (ggl. cerv cran) to form the n. canalis pterigoidei which go to ggl. pterigopalatina

Question 4

n. auricularis caudalis

Answer 4

r. digastricus -> m. digastricus

- r. stylohyoideus -> m. stylohyoideus

Question 5

n. auriculopalpebralis

Answer 5

rr. auriculares rosrales –> mm. auriculares
r. zygomaticus -> mm. of upper eyelid
- rr. palpebrales

–> PL. AURICULARIS ROSTRALIS

Question 6

r. buccalis dors et ventr

Answer 6

dors: crosses m. masseterica to muzzle
ventr: together with dors it supply cheek muscle lips and nostrils

Question 7

n. intermedius

Answer 7

PS, gustatory and sensory of the facial nerve, brached off the facial within the skull

–> ggl. geniculi –> chorda tympani together with n. lingualis

sympathetic and parasympathetic origin!!

Question 8

origin and types of the nuclei

Answer 8

ventrolat from medulla oblongata

secreto-M 1. nucl. salivatorius caudalis(gland)
M 2. nucl. ambiguus
SS 3. nucl tractus solitarii
S 4. nucl. tractus spinalis n. trigemini
viscero-M, PS 5. nucl, dorsalis vagi
viscero-S 6. nucl alae cinarea laterale

Question 9

exit skull, ggl

Answer 9

for. jugulare

ggl. prox et distale

Question 10

branches of IX

Answer 10

n, tympanicus

• n. petrosus minor
• nn. caroticotympani
• -> r. sinus caroticus(terminate in baro and chemoreceptors in glomus caroticus)

parallell to stylohyoid it divides into

• r. pharyngeus - mostly sensory
• r. lingualis - enter tongue paralell to a. lingualis, sensory to mucosa of radix linguae, taste buds, and motor to m. levator veli palatini