Cranial Nerves Flashcards
CN I
Olfactory
CN II
Optic
CN III
Occulomotor
CN IV
Trochlear
CN V
Trigeminal
CN VI
Abducens
CN VII
Facial
CN VIII
Vestibulocochlear
CN IX
Glossopharyngeal
CN X
Vagus
CN XI
Spinal Accessory nerve
CN XII
Hypoglossal
CN I Function
Sensory
CN II Function
Sensory
CN III Function
Motor
CN IV Function
Motor
CN V Function
Both
CN VI Function
Motor
CN VII Function
Both
CN VIII Function
Sensory
CN IX Function
Both
CN X Function
Both
CN XI Function
Motor
CN XII Function
Motor
CN I and II are located where in the brain?
Forebrain
CN III and IV are located where in the brain?
Midbrain
CN V is located where within the brain?
Pons
CN VI VII and VIII are located where within the brain?
Junction of the Pons and Medulla
CN IX and X are located where within the brain?
Medulla
CN XI is located where within the brain?
Spinal Chord
CN XII is located where within the brain?
Medulla - Most medial of all cranial nerves
What is the general rule of the cranial nerves?
From CN I they move posteriorly and laterally except CN XII which is more medial that CN XI
When do Cranial Nerve I first appear?
When passing the cribiform plate of the ethmoid bone
List the Motor Nerves
CN III CN IV CN VI CN XI CN XII
What muscles are controlled via the Oculomotor nerve CN III?
SR MR IR IO Superior Rectus Medial Rectus Inferior Rectus Inferior Oblique
What muscle is controlled by the parasympathetics of the Oculomotor Never CN III
Sphincter Pupillae Cilliary Muscle
What muscle is controlled by the trochlear nerve?
Superior Oblique
What is special about the trochlear nerve?
Only nerve to exit the posterior aspect of the midbrain
What muscles are supplied by the Abducens VI ?
Lateral Rectus
What muscles does the Hypoglossal XII innervate?
Genioglossal
Hypoglossal
Styloglossal
What muscles does the Spinal Accessory Nerve XI innervate?
Sternocleidomastoid
Trapezoids
Where does the Spinal Accessory Nerve arise from?
Cervical Spinal Chord
Passes up back into the cranium before descending via the jugular foramen
What nerve does the Pontine Trigeminal Nucleus belong too?
CN V Trigeminal
What is the function of the Pontine Nucleus?
Touch and vibration
CN I exits the skull via
Cribiform Plate
CN II exits the skull via
Optic Canal
CN III exits the skull via
Superior Orbital Fissure
CN IV exits the skull via
Superior Orbital Fissure
CN V1 exits the skull via
Superior Orbital Fissure
CN VI exits the skull via
Superior Orbital Fissure
CN V2 exits the skull via
Foramen Rotundum
CN V3 exits the skull via
Foramen Ovale
CN VII exits the skull via
Internal Acoustic Meatus
CN VIII exits the skull via
Internal Acoustic Meatus
CN IX exits the skull via
Jugular Foramen
CN X exits the skull via
Jugular Foramen
CN XI exits the skull via
Jugular Foramen
CN XII exits the skull via
Hypoglossal Canal
Which nerve supplies sensory innervation to the dura matter?
CN V Trigeminal