Cranial Nerves

CNI-CNIII

100

What is CNI and which foramina does it pass through?

CN1 - Olfactory N

Passes through the cribriform plate

200

Which muscles does CNIII innervate? 

Sup/mid/inf rectus

Inf oblique

Levator palpebrae

300

Parasympathetic role of CNIII

CNIII - Occulomotor N

Role: Pupillary constriction and accommodation

CNIV-CNVI

100

Which foramina does V3 and CNV pass through?

CNV V3 - Mandibular division of the trigeminal nerve

Foramen Ovale

200

What type of fibres make up the abducens N and what muscles does it innervate?

Abducens N - CNVI 

Motor fibres only and the lateral rectus

300

Sensory fibres

Passes through Foramen rotundum

Innervates lower eyelid, superior lip, gums, teeth, cheek, nose, palate, pharynx

Maxillary division of the trigeminal nerve (CNV V2)

CNVII-CNIX

100

Name CNVII, CN VIII and CNIX 

CNVII - Facial N

CNVIII - Vestibulocochlear N

CNIX - Glossopharyngeal N

200

Types of fibres in CNIX

Sensory

Motor

Parasympathetic 

300

Parasympathetic role of CNVII

Salivation and lacrimation

CNX-CNXII

100

What is CNXII and what foramina does it pass through? 

CNXII - hypoglossal N

Hypoglossal canal

200

Role of CNXI

Tilting and rotating the head, elevating the shoulders, and adducting the scapula

300

Structures innervated by CNX sensory fibres

Pharynx, larynx, oesophagus, external ear

Aortic bodies and arch 

Thoracic and abdominal visceral 

ALL

100

Which CNs have sensory, motor, and parasympathetic functions? 

CNVII (facial), CNIX (glossopharyngeal), CNX (vagus)

200

Which cranial nerves only have sensory fibres?

CNI (olfactory), CNII (optic), CNVIII (vestibulocochlear)

300

Which cranial nerves have motor functions? 

CNIII (occulomotor), CNIV (trochlear), CNV (trigeminal), CNVI (abducens), CNVII (facial), CNIX (glossopharyngeal), CNX (vagus), CNXI (accessory), CNXII (hypoglossal)

9 in total