Cranial Nerves I, IX, X, XI, & XII Flashcards
What is the name of cranial nerve I?
Olfactory
Where does cranial nerve I exit?
At the cribriform plate
Where is the cell body for CN I?
Nasal mucosa
What type of fibers are in CN I?
SVA
What is the function of CN I?
Smell
What is the name of CN IX?
Glossopharyngeal
Where doe CN IX exit?
Jugular foreman
What are the 5 cell bodies of CN IX and what are there targets?
Sup. Ganglion – GSA – External Ear
Inf. Ganglion – GVA – Visceral sensation
Inf. Ganglion – SVA – Taste (Post. 1/3 tongue)
Brainstem – SVE (BE) – Elevate Pharynx
Brainstem – GVE – Secrete Saliva
What is the name of CN X?
Vagus
Where does CN X exit?
Jugular Foreman
What are the 5 cell bodies of CN X and what are there targets?
Sup. Ganglion – GSA – External Auditory Meatus
Inf. Ganglion – GVA – Visceral sensation
Inf. Ganglion – SVA – Taste (Root of tongue, Epiglottis)
Brainstem – SVE (BE) – Muscles (Throat)
Brainstem – GVE – Smooth muscle glands (Preganglionic PS to the heart)
What are the names of the 5 branches of CN IX?
Carotid Sinus, Pharyngeal, Lingual, Lessor petrosal, Stylopharyngeus
What are the names of the 5 branches of CN X?
Pharyngeal branches, Carotid, Internal branch of the superior laryngeal, External branch of the superior laryngeal, Recurrent laryngeal
What is the name of CN XI?
Spinal Accessory Nerve
Where doe CN XI exit
Jugular Foreman
Where are the cell bodies of CN XI found?
Ventral Horn
What type of fibers are in CN XI?
GSE
What are the two muscles CN XI targets?
Sternocleidomastoid and Trapezius
What is the name of CN XII
Hypoglossal Nerve
Where are the cell bodies of CN XII found
Nuclei of the brainstem
What type of fibers does CN XII contain?
GSE
Where does CN XII exit?
Hypoglossal canal
What does CN XII innervate?
All intrinsic and extrinsic muscles of the tongue except the palatoglossus
