Skull

Question 1

Answer 1

Question 2

Answer 2

Question 3

Answer 3

Question 4

Answer 4

Question 5

Answer 5

Question 6

Answer 6

Question 7

Answer 7

Question 8

Answer 8

Question 9

Name the fontanelles

Answer 9

Posterior fontanelle
Anterior fontanelle
Sphenoidal fontanelles (not pictured)
Mastoid fontanelles (not pictured)

Question 10

When does the anterior fontanelle close?

Answer 10

12 - 18 months

Question 11

When does the posterior fontanelle close?

Answer 11

2 - 3 months

Question 12

Answer 12

Question 13

Answer 13

Question 14

Answer 14

Question 15

Answer 15

Question 16

Answer 16

Question 17

Answer 17

Question 18

Answer 18

Question 19

Answer 19

Question 20

Answer 20

Question 21

Answer 21

Question 22

Answer 22

Question 23

Answer 23

Question 24

Answer 24

Question 25

Answer 25

Question 26

Answer 26

Question 27

Layers of the scalp

Answer 27

Layers of the scalp include: o Skin o Dense connective tissue o Aponeurotic layer o Loose connective tissue o Pericranium (pericranium is a type of periosteum)

Question 28

Layers of the skull

Answer 28

The skull has 3 layers: o Outer table o Diploe o Inner table

Question 29

Foramen of the anterior cranial fossa

Answer 29

Foramen cecum Cribriform plate Anterior ethmoidal foramen Posterior ethmoidal foramen

Question 30

Foramen of the middle cranial fossa

Answer 30

Optic canal Superior orbital fissure Foramen rotundum Foramen ovale Foramen spinosum Foramen lacerum Carotid canal

Question 31

Foramen of the posterior cranial fossa

Answer 31

Internal acoustic meatus Jugular foramen Hypoglossal canal Foramen magnum Condylar canal

Question 32

Foramen Cecum: contents

Answer 32

Emissary vein from nasal cavity to superior sagittal sinus (variable)

Question 33

Cribriform Plate (Olfactory Foramina) Contents:

Answer 33

Cribriform Plate (Olfactory Foramina) Contents:

Question 34

Anterior ethmoidal foramen

Answer 34

Anterior ethmoidal artery (branch of the ophthalmic artery) Anterior ethmoidal vein Anterior ethmoidal nerve (branch of the nasociliary nerve, from the ophthalmic division of CN V1)

Question 35

Posterior ethmoidal foramen

Answer 35

Posterior ethmoidal artery (branch of the ophthalmic artery) Posterior ethmoidal vein Posterior ethmoidal nerve (branch of the nasociliary nerve, from the ophthalmic division of CN V1)

Question 36

Optic canal

Answer 36

Optic nerve (CN II) Ophthalmic artery Sympathetic fibers from the internal carotid plexus

Question 37

Superior orbital fissure

Answer 37

Oculomotor nerve (CN III) Trochlear nerve (CN IV) Ophthalmic nerve (V1 branch of CN V) Abducens nerve (CN VI) Superior ophthalmic vein Sympathetic fiberssSu

Question 38

Foreamen rotundum

Answer 38

Maxillary nerve (V2, branch of trigeminal nerve CN V)

Question 39

Foreamen ovale

Answer 39

Mandibular nerve (V3, branch of trigeminal nerve CN V) Accessory meningeal artery Lesser petrosal nerve (sometimes) Emissary veins

Question 40

Foreamen spinosum

Answer 40

Middle meningeal artery and vein Meningeal branch of mandibular nerve (V3)

Question 41

Foreamen lacerum

Answer 41

Filled with cartilage in life, but transmits: Small emissary veins Greater petrosal nerve passes above it (does not pass through) Deep petrosal nerve joins here to form nerve of the pterygoid canal (Vidian nerve)

Question 42

Carotid canal

Answer 42

Internal carotid artery Sympathetic plexus on internal carotid artery

Question 43

Internal acoustic meatus

Answer 43

Facial nerve (CN VII) Vestibulocochlear nerve (CN VIII) Labyrinthine artery

Question 44

Jugular foreamen

Answer 44

Glossopharyngeal nerve (CN IX) Vagus nerve (CN X) Accessory nerve (CN XI, cranial root) Internal jugular vein (beginning) Inferior petrosal sinus Sigmoid sinus

Question 45

Foreamen magnum

Answer 45

Medulla oblongata and meninges Vertebral arteries Spinal accessory nerve (CN XI, spinal roots) Anterior and posterior spinal arteries Tectorial membrane and alar ligaments (part of the craniovertebral joint)

Question 46

Hypoglossal canal

Answer 46

Hypoglossal nerve (CN XII) Meningeal branch of ascending pharyngeal artery

Question 47

Stylomastoid foreamen

Answer 47

Facial nerve (CN VII) exits skull here Stylomastoid artery

Question 48

Inferior orbital fissure

Answer 48

Infraorbital nerve (from V2) Zygomatic nerve (from V2) Infraorbital artery and vein Inferior ophthalmic vein

Question 49

Mental foreamen

Answer 49

Mental nerve (branch of inferior alveolar nerve, from mandibular nerve V3) Mental artery and vein

Question 50

Incisive foreamen

Answer 50

Nasopalatine nerve Sphenopalatine artery

Question 51

Greater + lesser palatine foramen

Answer 51

Greater and lesser palatine nerves (branches of maxillary nerve V2) Corresponding palatine arteries and veins

Question 52

Pterygotympanic fissure

Answer 52

Chorda tympani (from VII) Anterior tympanic artery

Question 53

Mastoid canaliculus

Answer 53

Auricular branch (from X)

Question 54

Inferior tympanic canaliculus

Answer 54

Tympanic nerve (from IX)

Question 55

Mastoid foramen

Answer 55

Mastoid emissary vein

Question 56

Condylar canal

Answer 56

Condylar emissary vein

Question 57

Temporomandibular joints (TMJ): bone

Answer 57

Joint head: head of mandible Joint socket: mandibular fossa and articular tubercle of the temporal bone

Question 58

Temporomandibular joints (TMJ): structures

Answer 58

Soft tissue Articular disc

Question 59

Temporomandibular joints (TMJ): ligaments

Answer 59

Stylomandibular ligament Sphenomandibular ligament