Cranial nerves Flashcards
Diseases anosmia or hyponosmia can be an early feature of
Parkinson’s disease
Alzheimer’s dementia
Area of brain lesion causing blindness in one eye
Anterior to the optic chiasm e.g. the optic nerve
Area of brain lesion causing bitemporal hemianopia
Optic chiasm
Area of brain lesion causing a left homonymous hemianopia
R sided optic tract
Area of brain lesion causing R homonymous hemianopia
L sided optic tract
Brain lesions causing enlargement of the blind spot
Anything causing swelling of the optic discs
Area of brain lesion causing a superior quadrantanopia
Contralateral Temporal lobe
Area of brain lesion causing an inferior quadrantanopia
Contralateral parietal lobe
Area of brain lesion causing cortical blindness
Occipital lobe
Origin of the olfactory nerve
Cerebrum
Exit of the olfactory nerve
Cribriform plate
Origin of the optic nerve
Retinal ganglion cells
Exit of the optic nerve
Optic canal
Origin of the oculomotor nerve
Anterior aspect of the midbrain
Exit of the oculomotor nerve
Superior orbital fissure
Origin of the trochlear nerve
Dorsal aspect of the midbrain
Exit of the trochlear nerve
Superior orbital fissure
Origin of the trigeminal nerve
Pons
Exit of the ophthalmic branch of the trigeminal nerve
Superior orbital fissure
Exit of the maxillary branch of the trigeminal nerve
Foramen rotundum
Exit of the mandibular branch of the trigeminal nerve
Foramen ovale
Origin of the abducens nerve
Pons
Exit of the abducens nerve
Superior orbital fissure
Origin of the facial nerve
Pons
Exit of the facial nerve
Internal acoustic meatus
Stylomastoid foramen
Origin of the vestibulocochlear nerve
Cerebellopontine angle
Exit of the vestibulocochlear nerve
Internal acoustic meatus
Origin of the glossopharyngeal nerve
Medulla
Exit of the glossopharyngeal nerve
Jugular foramen
Origin of the vagus nerve
Medulla
Exit of the vagus nerve
Jugular foramen
Origin of the accessory nerve
Cranial and spinal roots
Exit of the accessory nerve
Jugular foramen
Origin of the hypoglossal nerve
Medulla
Exit of the hypoglossal nerve
Hypoglossal canal
Function of the olfactory nerve
Sense of smell
Function of the olfactory nerve - motor/sensory/both
Sensory
Function of the optic nerve
Eyesight
Function of the optic nerve - motor/sensory/both
Sensory
Function of the oculomotor nerve
Innervates the eye muscles apart from the superior oblique and the lateral rectus
Eye movements apart from abduction and depression while adducted
Muscles innervated by the oculomotor nerve
Levator palpabrae superioris Superior rectus Medial rectus Inferior rectus Inferior oblique
Function of the oculomotor nerve - motor/sensory/both
Motor
Function of the trochlear nerve
Innervates the superior oblique muscle
Depression while adducted and internal rotation of the eye
Function of the trochlear nerve - motor/sensory/both
Motor
Function of the trigeminal nerve
Sensation of the face
Innervates muscles of mastication
Function of the trigeminal nerve - motor/sensory/both
Both
Function of the abducens nerve
Innervates the lateral rectus
Abducts the eye
Function of the abducens nerve - motor/sensory/both
Motor
Function of the facial nerve
Innervates muscles of facial expression
Taste of the anterior 2/3 of the tongue
Corneal reflex
Function of the facial nerve - motor/sensory/both
Both
Function of the vestibulocochlear nerve
Sensation of sound
Function of the vestibulocochlear nerve - motor/sensory/both
Sensory
Function of the glossopharyngeal nerve
Taste of the poster 1/3 of the tongue
Innervation to the parotid gland
Innervates the stylopharyngeus muscle
Function of the glossopharyngeal nerve - motor/sensory/both
Both
Function of the vagus nerve
Innervation to most laryngeal and pharyngeal muscles - controls muscles for voice and the soft palate
Parasympathetic fibres to the thoracic and abdominal viscera
Function of the vagus nerve - motor/sensory/both
Both
Function of the accessory nerve
Innervates the sternocleidomastoid and trapezius muscles
Function of the accessory nerve - motor/sensory/both
Motor
Function of the hypoglossal nerve
Innervates the muscles of the tongue
Function of the hypoglossal nerve - motor/sensory/both
Motor
Structure which secretes the CSF
Choroid plexus
Cranial nerve involved for the sensory component of the pupillary light reflex
Optic
Cranial nerve involved for the motor component of the pupillary light reflex
Oculomotor
Cranial nerve involved for the sensory component of the accommodation reflex
Optic
Cranial nerve involved for the motor component of the accommodation reflex
Oculomotor
Cranial nerve involved for the sensory component of the jaw jerk reflex
Trigeminal
Cranial nerve involved for the motor component of the jaw jerk reflex
Trigeminal
Cranial nerve involved for the sensory component of the corneal reflex
Trigeminal
Cranial nerve involved for the motor component of the corneal reflex
Facial
Cranial nerve involved for the sensory component of the vestibulo-ocular reflex
Vestibulocochlear
Cranial nerves involved for the motor component of the vestibulo-ocular reflex
Oculomotor
Trochlear
Abducens
Cranial nerve involved for the sensory component of the gag reflex
Glossopharyngeal
Cranial nerve involved for the motor component of the gag reflex
Vagus
Largest cranial nerve
Trigeminal
Side the tongue deviates to in a hypoglossal nerve palsy
The affected side