Foramina, Canals, and Fissures

Carotid Canal

Carotid Arteries

Olfactory Foramina (Cribriform Foramina) of ethmoid plate

Olfactory nerve (I)

Optic Canal

Optic nerve (II)

Superior Orbital Fissure

Oculomotor nerve (III)

Trochlear nerve (VI)

Trigeminal nerve (V)

Abducens Nerve (VI) Ophthalmic branch

Foramen Ovale & Foramen Rotundum

Trigeminal nerve (V) maxillary and mandibular branch

Internal & External Acoustic Canal

Facial nerve (VII)

Vestibulocochlear nerve (VIII)

Stylomastoid Foramen

Facial nerve (VII)

Jugular Foramen

Glossopharyngeal nerve (IX)

Vagus nerve (X)

Accessory nerve (XI)

Jugular veins

Foramen Magnum

Accessory nerve (XI)

Spinal Cord

Vertebral arteries

Foramen Lacerum and Foramen Spinosum

Blood Vessels

Hypoglossal Canals

Hypoglossal nerve (XII)