Skull bone Foramen and its contents.pptx

human skull anatomy- foramina and contents

1. SKULL bone foramina Dr. vinay kumar sahu PG-1 Resident, (Radiation Oncology) REGIONAL CANCER CENTRE, RAIPUR

2. Foramina of middle cranial fossa Nerve Artery Optical canal Optic nerve Ophthalmic artery Superior orbital fissure Occulomotor nerve (III) Trochlear nerve (IV) Abducens nerve (VI) First branch of trigeminal nerve ( ophthalmic nerve V1) Ophthalmic vein Meningeal branch of lacrimal artery Foramen Ovale MALE Third branch of trigeminal nerve ( M andibular nerve V3) A ccessory meningeal artery L essor petrosal nerve E missary vein connecting cavernous sinus Foramen rotundum Second branch of trigeminal nerve ( Maxillary nerve V2) Foramen spinosum Meningeal branch of mandibular nerve V3 Middle meningeal artery Middle meningeal vein Foramen lacerum Foramen filled with cartilage

3. Foramina of posterior cranial fossa Nerve Artery Jugular foramen Glossopharyngeal nerve (IX) Vagus nerve (X) Spinal accessory nerve (XI) Meningeal branches of ascending pharyngral and occipital arteries Inferior petrous sinus Foramen magnum Spinal roots of spinal accessory nerve (XI) Anterior and posterior spinal arteries Vertebral arteries Internal acoustic meatus Facial nerve (VII) Vestibulo cochlear nerve ( VIII) Labyrinthine vessels Hypoglossal canal Hypoglossal nerve (XII)