CRANIAL NERVES Flashcards
How many cranial nerves are there
12
What is the name of Cranial nerve 1
Olfactory nerve
Name cranial nerve 2
Optic nerve
Name cranial nerve 3
Oculomotor nerve
Name cranial nerve 4
Trochlear nerve
Name cranial nerve 5
Trigeminal
V1 = ophthalmic
V2= Maxillary
V3= Mandibular
Name cranial nerve 6
Abducent nerve
Name cranial nerve 7
Facial nerve
Name cranial nerve 8
Vestibulocochlear nerve
Name cranial nerve 9
Glossopharyngeal nerve
Name cranial nerve 10
Vagus nerve
Name cranial nerve 11
Accessory nerve
Name cranial nerve 12
Hypoglossal nerve
Where does the olfactory nerve exit the skull
Cribriform plate
Where does the optic nerve exit the skull
Optic canal
Where does the oculomotor nerve exit the skull
Orbital tissue
Where does the trochlear nerve exit the skull
Orbital fissure
Where does the trigeminal nerve exit the skull
V1 = orbital fissure V2= round foramen V3 = Oval foramen
Where does the abducent nerve exit the skull
Orbital fissure
Where does the facial nerve exit the skull
Stylomastoid foramen / internal acoustic meatus
Where does the vestibulocochlear nerve exit the skull
Internal acoustic meatus
Where does the Glossopharyngeal nerve exit the skull
Jugular foramen
Where does the vagus nerve exit the skull
Jugular foramen
Where does the accessory nerve exit the skull
Jugular foramen
Where does the hypoglossal nerve exit the skull
Hypoglossal canal
Origin of olfactory nerve
Cerebrum- olfactory bulb
Origin of optic nerve
Diencephalon
Origin of oculomotor nerve
Ventral midbrain
Origin of trochlear nerve
Dorsal midbrain
Origin of trigeminal nerve
Junction of the pons and medulla oblongata
Origin of abducent nerve
Medulla oblangata
Origin of facial nerve
Medulla oblongata
Origin of vestibularcochlear nerve
Medulla oblongata
Origin of glossopharyngeal nerve
Medulla oblongata
Origin of vagus nerve
Medulla oblongata
Origin of accessory nerve
Medulla oblongata
Origin of hypoglossal nerve
Medulla oblongata
What fibre types does the olfactory contain
Sensory - SVA
What fibre types does the optic nerve contain
Sensory - SSA
What fibre types does the oculomotor nerve contain
Motor- GSE and GVE
What fibre type does the trochlear nerve contain
Motor- GSE
What fibre types does the trigeminal nerve contain
Both
V1- sensory GSA
V2- sensory GSA
V3- both GSA and GSE
What fibre types does the abducent nerve contain
Motor - GSE
What fibre types does the facial nerve contain
Both- SVA GVE GSE GSA
What fibre types does the vestibulocochlear nerve contain
Sensory- SSA
What fibre types does the glossopharyngeal nerve contain
Both - GSE GVA GVE GSA and SVA
What fibre types does the vagus nerve contain
Both- GSE GVA GVE GSA and SVA
What fibre types does the accessory nerve contain
Motor - GSE
What fibre types does the hypoglossal nerve contain
Motor- GSE
What is the function of the olfactory nerve
Transmits the sense of smell
What is the function of the optic nerve
Transmits visual information
What is the function of the oculomotor nerve
- Supplies the external muscles of the eyeball for eye movement
- controls focusing the lens
- controls pupil constriction
What is the function of the trochlear nerve
Supplies the dorsal oblique muscle ( eye movements)
What is the function of the trigeminal nerve
V1- face sensation
V2- goes to teeth
V3- supplies mastication ventral throat and palate muscles and salivary glands
What is the function of the abducent nerve
Controls the lateral rectus and retractor bulbi muscles ( in the eye)
What is the function of the facial nerve
- detects taste
- allows facial expression
- motor to salivary lacrimal glands
What is the function of the vestibulocochlear nerve
- senses balance
- senses sound
Function of the glossopharyngeal nerve
- controls muscles for swallowing
- detects tongue sensations
What is the function of the vagus nerve
- detects thoracic and abdominal organ sensations
- controls thoracic and abdominal movements
What is the function of the accessory nerve
Controls the trapezius and 3 neck muscles
What is the function of the hypoglossal nerve
Controls the intrinsic and extrinsic tongue movements