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Flashcards in Week 3 Dry Room Deck (43)
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1

Which bone forms posterior boundary of the anterior cranial fossa

Body
Lesser and Greater wings of Sphenoid bone

2

Name features of the anterior cranial fossa

Cribiform plate of ethmoid bone
Crista galli in the modline

3

Which bone forms the anterior boundary of the middle cranial fossa

Tubercle Sellae

4

Which bones form the floor of the middle cranial fossa

Greater wings of sphenoid bone and temporal bone (squamous and petrous parts)

5

Which four bones come together at the pterion

Parietal
Temporal
Frontal
Sphenoid

6

Which bone forms the anterior and which the posterior border of the posterior cranial fossa

Anterior- Dorsum Sellae
Posterior- Internal occipital protuberance

7

What structures pass through the small foramina of the skull

Emissary vein

8

Structures that pass through the cribriform plate

CN I- Olfactory nerve

9

What structure passes through the optic foramen

CN II- Optic nerve
Ophthalmic artery

10

What structure passes through the Superior orbital fissure

CN III, VI, IV, V1 and sympathetic fibres

11

What structures pass through Foramen Rotundum

CN V2 Maxillary branch

12

What structure passes through Foramen Ovale

CN V3- Mandibular branch and accessory meningeal artery

13

What structures pass through the Foramen Spinosum

Middle meningeal artery, vein and Meningeal branch of the CN V3

14

What structures pass through the Foramen Lacerum

ICA, sympathetic and venous plexus

15

What Structures pass through the Carotid canal

ICA and Carotid plexus

16

What structures pass through the internal acoustic foramen

CN VII and CN VIII
Labyrinthe arteries

17

What structures pass through the jugular foramen

CN X, IX, XI
Vagus, Glossopharyngeal and Accessory

18

What structures pass through hypoglossal foramen

CN XII- Hypoglossal nerve

19

What structure passes through the Forman magnum

Medulla and Meninges
Ventral arteries
Dural veins
Anterior and posterior spinal arteries

20

What groove begins just lateral to the foramen spinosum

Cavernous sinus

21

What artery and its branches make the groove for the cavernous sinus

Meningeal artery

22

What are the grooves for the intracranial venous sinus called

Transverse sinus

23

Into which foramen does the groove for the sigmoid sinus lead

Jugular foramen

24

Which major vein emerges into the neck from the jugular foramen

Internal jugular vein

25

In the body of which cranial bone is the sella turcica found

Middle fossa- sphenoid bone

26

Which foramen lies immediately anterior to the groove for the cavernous sinus

Superior Orbital Fissure

27

Name the features on the base of the skull

medial pterygoid plate
Lateral pterygoid plate
Pterygoing Hamulus
Palatine process
Horizontal plate of palatine
Posterior nasal spine
Temporal bone
Occipital bone

28

Which bone is the pterygoid plates and the pterygoin hamulus part of

Sphenoid bone

29

What muscle attaches to the lateral and medial pterygoing plates

Medial pterygoid muscle
Lateral pterygoid muscle

30

What are the advantages for a neonate of having a comparatively flexible skull during childbirth

Ease of passage through birth canal