Cranial Nerves Part 2 Flashcards
What CNs emerge from the internal acoustic meatus?
CN VII (facial n.)
CN VIII (vestibulocochlear n.)
Which branch of CN VII supplies motor innervation to muscles of facial expression?
Somatic motor branch
Which branch of CN VII supplies taste to anterior 2/3 of tongue & parasympathetic to sublingual & submandibular glands?
Chorda Tympani
The chorda tympani n. supplies what 2 glands?
Sublingual
Submandibular
What nerve does the chorda tympani n. join?
Lingual n.
This branch of CN V supplies the lacrimal gland and mucus secretion to nasal cavity and palate
Greater petrosal n.
The greater petrosal n. projects to the _______ ganglion
pterygopalatine ganglion
What fossa is pterygopalatine fossa in?
Infratemporal fossa
Bell’s Palsy is cause by defect of what nerve?
Facial n. (CN VII)
*specifically the somatic motor branch
2 things CN VIII is responsible for?
Hearing
Balance/equilibrium
The cochlear portion of CN VIII is for what
hearing
The vestibular portion of CN VIII is for what
balance/equilibrium
A tumor at the cerebellopontine angle would affect what 2 CNs?
CN VII (facial n.)
CN VIII (vestibulocochlear n.)
What CN innervates the stylopharyngeus m,
CN IX (glossopharyngeal n.)
Gen. sensation to post. 1/3 tongue?
CN IX (glossopharyngeal n.)
Gen. sensation to oropharynx?
CN IX (glossopharygeal n.)
What CN supplies the parotid gland?
CN IX (glossopharyngeal n.)
What ganglion does CN IX connect to to get to the parotid gland?
Otic ganglion
Innervates soft palate, pharyngeal m. (except stylopharyngeus) and laryngeal intrinsic m.
CN X (vagus n.)
Provides parasympathetic innervation of viscera in thorax and abdomen
CN X (vagus n.)
The spinal accessory n. CN XI originates from C__-C__
C1-C4
Where does CN XI ascend into the cranial cavity through?
Foramen magnum
Where does CN XI exit the skull?
Jugular foramen
Innervates muscles of the tongue except for palatoglossus
CN XII (hypoglossal n.)
