Different Passageways and What They Include In Cranial Foramina

Question 1

What structures pass into and out of the cranial cavity in the cranial base?

Answer 1

1. Spinal cord
2. Cranial nerves
3. Blood vessels
4. Venous sinuses

Question 2

What structures pass through the optic canal?

Answer 2

1. optic nerve

2. ophthalmic artery

Question 3

What structures pass through the superior orbital fissure?

Answer 3

1. oculomotor nerve
2. trochlear nerve
3. trigeminal nerve, ophthalamic branch
4. abducens nerve
5. ophthalmic veins

Question 4

What structures pass through the foramen rotundum?

Answer 4

1. maxillary branch of the trigeminal nerve (cranial nerve 5)

Question 5

What structures pass through the foramen spinosum?

Answer 5

1. middle meningeal artery
2. middle meningeal vein
3. meningeal branch of the mandibular nerve (branch of cranial nerve 5)

Question 6

What structures pass through the carotid canal?

Answer 6

deep petrosal nerve

Question 7

What structures pass through the foramen magnum?

Answer 7

1. medulla oblongata
2. meninges
3. spinal accessory nerves
4. anterior and posterior spinal arteries
5. vertebral arteries

Question 8

What structures pass through the mastoid foramen?

Answer 8

1. mastoid emissary vein to the sigmoid sinus

2. small branch of the occipital artery to the dura mater

Question 9

What structures pass through the jugular foramen?

Answer 9

1. glossopharyngeal nerve (cranial nerve 9)
2. vagus nerve
3. spinal accessory nerve (cranial nerve 11)
4. inferior jugular vein
5. inferior petrosal sinus
6. sigmoid sinus

Question 10

What structures pass through the lateral part of the cribriform plate?

Answer 10

1. olfactory fibers of the superior nasal conchae

Question 11

What structures pass through the hypoglossal canal?

Answer 11

the hypoglossal nerve (cranial nerve 12)