CNI-CNIII
What is CNI and which foramina does it pass through?
CN1 - Olfactory N
Passes through the cribriform plate
Which foramina does V3 and CNV pass through?
CNV V3 - Mandibular division of the trigeminal nerve
Foramen Ovale
Name CNVII, CN VIII and CNIX
CNVII - Facial N
CNVIII - Vestibulocochlear N
CNIX - Glossopharyngeal N
What is CNXII and what foramina does it pass through?
CNXII - hypoglossal N
Hypoglossal canal
Which CNs have sensory, motor, and parasympathetic functions?
CNVII (facial), CNIX (glossopharyngeal), CNX (vagus)
Which muscles does CNIII innervate?
Sup/mid/inf rectus
Inf oblique
Levator palpebrae
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
Types of fibres in CNIX
Sensory
Motor
Parasympathetic
Role of CNXI
Tilting and rotating the head, elevating the shoulders, and adducting the scapula
CNI (olfactory), CNII (optic), CNVIII (vestibulocochlear)
Parasympathetic role of CNIII
CNIII - Occulomotor N
Role: Pupillary constriction and accommodation
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)
Parasympathetic role of CNVII
Salivation and lacrimation
Pharynx, larynx, oesophagus, external ear
Aortic bodies and arch
Thoracic and abdominal visceral
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