Foramen

Question 1

1

Answer 1

Optic canal

• Optic nerve (2) - special sense of vision
• Opthalamic artery (ICA)

Question 2

2

Answer 2

Superior orbital fissure (Sphenoid bone)

• Cranial nerve 3 (occulomotor)
• Cranial nerve 4 (trochlear) - SO
• Cranial nerve 6 (abducens) - LR
• V1 opthalamic (5- Trigmeninal) - general sensory to areas of forehead, upper eyelid and upper conjunctiva
• Opthalamic veins (superior and inferior) - empty into cavernous sinus

Question 3

What passes through the inferior orbital fissure

Answer 3

infra-orbital nerve (branch of V2 maxillary nerve)

general sense to the cheek and upper jaw

Question 4

1

Answer 4

optic canal

• optic nerve 2
• opthalamic artery (ICA)

Question 5

2

Answer 5

superior orbital fissue

• CN3,4,6
• V1 - opthalamic
• opthalamic veins -> cavernous sinus -> IJV

Question 6

3

Answer 6

inferior orbtial fissue

• infraorbital nerve (V2)
• general sense to the cheek, upper jaw

Question 7

4

Answer 7

lacrimal groove

leads to the opening for nasolarcimal ducrt to drain into the inferior nasal meatus

Question 8

1-7

Answer 8

1. optic canal
2. superior orbital fissure
3. foramen rotundum
4. foramen ovale
5. foramen spinosum
6. foramen lacerum
7. carotid canal

Question 9

x

Answer 9

pterion

middle meningeal artery - ECA

Question 10

what are emissary veins

Answer 10

thin walled , valveless veins that pass through the foramina of the skull

Communication between venous sinuses and veins of the scalp

Question 11

what passes via 2?

Answer 11

foramina of cribriform plate

olfactory nerve (2)

Question 12

what passes through the optic canal

Answer 12

• optic nerve 2
• opthalamic artery ICA (supplies retina and CN2)

Question 13

what passes through the superior orbital fissure

Answer 13

superior orbital fissure

• cranial nerve 3, 4, 6
• V1 opthalamic division
• opthalamic veins

Question 14

4

Answer 14

foramen rotundum

V2 maxillary divsion

(maximally rounded)

Question 15

7

Answer 15

foramen ovale

• MALE
• mandibular nerve V2
• accessory meningeal artery (maxillary - ECA)
• Lessor petrosal nerve (branch of CN9)
• Emissary veins

Question 16

5

Answer 16

Foramen spinosum

• middle meningeal artery - maxillary - ECA

supplies dura matter of meninges

Question 17

1

Answer 17

foramen lacerum

• greater petrosal nerve (branch of CN7)

Question 18

2

Answer 18

Carotid canal

posterior and lateral to foramen lacerum

ICA

Question 19

8

Answer 19

internal acoustic foramen

• facial nerve 7
• vesibulocochler 8

Question 20

9

Answer 20

jugular foramen

• cranial nerve 9 glossopharyngeal
• 10 vagus
• 11- accessory

IJV exits -> brachiocephlic veins -> SVC

Question 21

11

Answer 21

Hypoglossal canal/foramen

CN12

close to foramen magnum

Question 22

x

Answer 22

foramen magnum

• spinal cord
• lower end of medulla
• vertebral arteries
• spinal arteries
• dural veins

Question 23

1

Answer 23

optic canal

Question 24

2

Answer 24

Foramen rotundum

Question 25

3

Answer 25

Foramen ovale

Question 26

4

Answer 26

foramen spinosum

Question 27

5

Answer 27

internal acoustic meatus

Question 28

6

Answer 28

hypoglossal foramen CN12

Question 29

7

Answer 29

Foramen magnum

Question 30

8

Answer 30

jugular foramen CN - 9, 10, 11 IJV

Question 31

# 9 9

Answer 31

foramen lacerum - greater petrosal nerve - CN7

Question 32

1

Answer 32

foramen ovale MALE mandibular nerve asscessory meningeal artery (maxillary - ECA) Lessor petrosal nerve - CN9 Emissary veins

Question 33

2

Answer 33

forman lacerum - greater petrosal nerve (CN7)

Question 34

3

Answer 34

stylomastoid formen

Question 35

4

Answer 35

formen spinosum - ,middle meningeal artery (maxillary - ECA)

Question 36

5

Answer 36

carotid canal ICA

Question 37

# 6 6

Answer 37

jugular foramen CN 9, 10. 11 IJV exits

Question 38

1

Answer 38

Foramen ovale

Question 39

2

Answer 39

Foramen spinosum

Question 40

3

Answer 40

inferior orbital fissure

Question 41

4

Answer 41

foramen lacerman

Question 42

5

Answer 42

carotid canal

Question 43

6

Answer 43

jugular foramen 9,10.11 IJV

Question 44

# 1. 1,2,3

Answer 44

1. groove for superior sagittal sinus 2. groove for transverse sinus 3. internal ooccipital proturberane

Question 45

label the grooves

Answer 45

1. inferior petrosal sinus 2. sigmoid sinus -> IJV 3. transverse sinus 4. confluence of sinuses 5. superior petrosal sinus 6. superior sagittlal sinus

Question 46

x

Answer 46

middle meningeal artery (ECA)

Question 47

Answer 47

impression for middle meningeal artery

Question 48

label sinues

Answer 48

1. superior sagittal sinus 2. inferior sagittal sinus 3. superior petrosal sinus 4. intercavernous sinus 5. sigmoid sinus 6. transverse sinus 7. straight sinus 8. occipital sinus