External Brain

Question 1

Cribriform plate

Answer 1

Olfactory nerve CNI

Question 2

Optic canal

Answer 2

Optic nerve CNII
Opthalamic artery

Question 3

Superior orbital fissure

Answer 3

Oculomotor nerve CNIII
Trochlear nerve CNIV
Opthalamic nerve CNV1
Abducens nerve CNVI
Superior Opthalamic vein
Inferior Opthalamic vein branch

Question 4

Foramen rotundum

Answer 4

Maxillary nerve CNV2

Question 5

Foramen ovale

Answer 5

Mandibular nerve CNV3
Accessory meningeal artery

Question 6

Internal acoustic meatus

Answer 6

Facial nerve CNVII
Vestibulocochlear nerve CNVIII
Labyrinthine artery

Question 7

Jugular foramen

Answer 7

Glosopharyngeal nerve CNIX
Vagus nerve CNX
Accessory nerve CNXI
Inferior petrosal sinus
Sigmoid sinus
Meningeal branches of occipital and ascending pharyngeal arteries

Question 8

Hypoglossal canal

Answer 8

Hypoglossal nerve CNXII

Question 9

Cranial nerves foramina diagram

Answer 9

Question 10

Foramen magnum

Answer 10

Medulla
Meninges
Vertebral arteries
Anterior and posterior spinal arteries
Dural veins

Question 11

Foramen spinosum

Answer 11

Middle meningeal artery and vein

Question 12

Foramen lacerum

Answer 12

Cartilage

Question 13

Foramen summary table

Answer 13