Facial Nerve

Question 1

2 Roots of Facial Nerve

Answer 1

Motor

And

Nervus intermedius (Nerve to Wrisberg)

Question 2

Nerve to Wrisberg Carries

Answer 2

Sensory Fibres
Secretory Fibres
Parasympathetic Fibres

Question 3

Course of Facial Nerve Till Pterygopalatine Ganglion

Answer 3

Nervi Intermedius → Trunk of Facial Nerve →

Pass through Internal Acoustic Meatus → Geniculate Ganglion →

Greater Petrosal Nerve + Deep Petrosal Nerve →

Forms Vidian Nerve →

ends in Pterygopalatine Ganglion

Question 4

Parasympathetic Branches from Pterygopalatine Ganglion

Answer 4

Nasal Branch ~ Nasal Gland

Zygomatic Nerve → Zygomaticotemporal Nerve + Lacrimal Nerve ~ Lacrimal Gland

Greater Palatine Nerve → Lesser Palatine Nerve ~ Palatine Glands

Question 5

Chorda Tympani Carries

Answer 5

PreGanglionic Parasympathetic Fibres

Chorda Tympani Nerve + Lingual Nerve →

Submandibular Ganglion ~ Supplies

Submandibular Gland
Sublingual Gland
Ant. 2/3 of Tongue

Question 6

Motor Branch From Facial Nerve in Middle Ear

Answer 6

Branch To Stapedius Muscle (derived from 2nd Arch)

Question 7

Facial nerve after coming out of Stylomastoid Foramen

Answer 7

Enters the Parotid Gland and Divided into

1. Temporofacial
   a) Temporal
   b) Zygomatic
2. Cervicofacial
   a) Buccal
   b) Marginal Mandibular
   c) Cervical

Question 8

Terminal Branches of Facial Nerve Supplies

Answer 8

Muscles of Facial Expression

Post. Belly of Digastric

Stylohyoid

Occipital belly of Occipitofrontalis Muscle

(Derived from 2nd Arch)

Question 9

Injury of Facial Nerve in the Face

Answer 9

Paralysis of Muscle Of Facial Expression

Question 10

Lesion Proximal To Geniculate Ganglion will leads to

Answer 10

Bogorad / Crocodile Tear Syndrome

Regenerating Parasympathetic Fibres will innervate Lacrimal Gland instead of Salivary Gland

Spontaneous Lacrimation While Eating