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Skull Openings & Cranial Nerves (Orbital Fissure (CNIII: Oculumotor…
Skull Openings & Cranial Nerves
Cribiform plate
CNI: Olfactory
Sensory
Smell
Optic Foramen
CNII: Optic Nerve
Sensory
Vision
Orbital Fissure
CNIII: Oculumotor
Motor
Most eye muscles (SE) & Ciliary body/ iris (VE)
Parasympathetic division: Ciliary ganglion
Pupillary sphincter and ciliary body
CNIV: Trochlear
Motor
Dorsal oblique (SE)
CNV: Trigeminal- Opthalmic
Both
Facial sensation (SA)
CNVI: Abducens
Motor
Retractor bulbi & lateral rectus (SE)
Rostral Alar Opening
CNV: Trigeminal- Maxillary
Both
Facial sensation (SA)
Oval Foramen
CNV: Trigeminal- Mandibular
Both
Facial Sensation (SA); pteragoid, masseter, mylohyoideus (SE)
Stylomastoid Foramen
CNVII: Facial
Both
Muscles of facial expression (SE), facial glands (VE), internal pinna (SA), Taste on rostral 2/3
Parasympathetic division: Pterygopalatine ganglion & Mandibular ganglion
Lacrimal, nasal, and palatine glands
Mandibular and sublingual salivary glands
Internal Acoustic Meatus
CNVIII: Vestibulocochlear
Sensory
Hearing and balance
Tympanooccipital Fissure:
CNIX: Glossopharyngeal
Both
Ear canal (SA); Gag reflex = caudal tongue, pharynx (VA); Swallowing= soft palate, pharynx (SE); Parotid/ zygomatic salivary (VE); Taste= caudal 1/3
Parasympathetic division: Otic ganglion
Parotid and zygomatic salivary glands
CNX: Vagus
Both
Ear canal (SA); Pharynx, larynx, trachea, esophagus, viscera (VA); Swallowing, resp, vocalization (SE); Taste- pharynx
CNXI: Accessory
Motor
Branchiometric neck & forelimb muscles (SE)
Hypoglossal Foramen
CNXII: Hypoglossal
Motor
Tongue muscles (SE)