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Head And Neck Anatomy > Skull and Cranial Cavity > Flashcards

Skull and Cranial Cavity Flashcards

1
Q

Nasion is formed by fusion of which three bones?

A

Two nasal and one frontal bone

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2
Q

Pterion is formed by fusion of which four bones?

A

Temporal, Frontal, Parietal and Sphenoid

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3
Q

Asterion is formed by junction of which three bones?

A

Occipital, Parietal and Tempooral

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4
Q

Which artery runs beneath Pterion?

A

Anterior division of middle meningeal artery

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5
Q

Coronoid process of the mandible is the point of attachement for which muscle?

A

Temporalis Muscle

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6
Q

What is the most prominent point of external occipital protruberance called?

A

Inion

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7
Q

where is mastoid notch located and what muscle attaches to it?

A

Inferomedial border of mastoid process, and posterior belly of digastric attaches here

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8
Q

What is the junction of coronal and sagittal suture called?

A

Bregma

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9
Q

What is the junction of sagittal and lambdoid suture called?

A

Lamda

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10
Q

What two bones form the hard palate?

A

Maxilla (palatine process) and Palatine bone (horizontal plate)

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11
Q

Sutures in between the two palatine process of the maxilla is called?

A

Intermaxillary suture

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12
Q

Suture between the maxillae and palatine bones is called?

A

palatomaxillary suture

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13
Q

Suture between the palatine bones in the midline is called?

A

Interpalatine Suture

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14
Q

What three foramina are there in the anterior part of the skull base, in inferior view?

A

Incisive Foramen
Greater palatine foramen
Lesser palatine foramen

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15
Q

Pterygoid processes are part of which bone and located where?

A

Sphenoid, and immediately lateral to each choana

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16
Q

What three bones form foramen lacerum?

A

Sphenoid, Occipital and Temporal

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17
Q

What bone are foramen ovale and spinosum part of?

A

Sphenoid (greater wing)

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18
Q

Carotid canal is in which bone?

A

Temporal

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19
Q

What bone are the condylar and hypoglossal canal in?

A

Occipital

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20
Q

What two bones form the jugular foramen?

A

Occipital and temporal

21
Q

Where is the stylomastoid foramen located?

A

in temporal bone, between, mastoid process and styloid process.

22
Q

What do the granular foveolae on the inside of the skull mark?

A

location of arachnoid granulations

23
Q

What attaches on the frontal crest?

A

falx cerebri

24
Q

What bones form the anterior cranial fossa?

A

Frontal, ethmoid, sphenoid

25
Q

Where is the foramen cecum and what passes through it?

A

Between frontal and ethmoid bones, and emissary veins pass through it to nasal cavity, connecting it with superior sagittal sinus

26
Q

What passes through cribriform foramina of ethmoid bone?

A

Olfactory nerves from nasal mucosa to olfactory bulb

27
Q

How many total foramina are there in anterior cranial fossa?

A
  1. Foramen cecum, and cribriform foramina
28
Q

What is the boundary between the anterior and middle cranial fossa?

A

Anterior edge of chiasmatic sulcus, between the optic canals across the body of sphenoid

29
Q

What attaches on anterior clinoid process?

A

Tentorium cerebelli

30
Q

What bones does the middle cranial fossa consist of?

A

Sphenoid, and temporal

31
Q

What is the posterior boundary of middle cranial fossa?

A

Anterior surface of the petrous part of the temporal bone

32
Q

What are the anterior and posterior walls of sella turcica called?

A

anterior: tuberculum sellae
posterior: dorsum sellae

33
Q

Where’s the superior orbital fissure located and what passes through it?

A

between the lesser and greater wings of sphenoid, CN 3,4, 5(i), 6, and superior ophthalmic veins pass through it

34
Q

What passes through foramen rotundum and to where?

A

Maxillary nerve of trigeminal, it goes to pterygopalatine fossa

35
Q

What passes through optic canal?

A

optic nerve and ophthalmic artery

36
Q

What passes through foramen ovale?

A

Mandibular nerve, lesser petrosal nerve and accessory middle meningeal artery, it goes to infratemporal fossa

37
Q

What passes through foramen spinosum and to where?

A

Middle meningeal artery and veins, and to infratemporal fossa

38
Q

What passes through carotid canal and from where?

A

internal carotid artery from neck

39
Q

what passes through foramen lacerum?

A

nothing, it’s filled with cartilaginous plug

40
Q

Greater petrosal nerve is a branch of which cranial nerve?

A

Facial nerve

41
Q

Lesser petrosal nerve is a branch of which nerve?

A

Glossopharyngeal nerve

42
Q

What bones form the posterior cranial fossa?

A

occipital and temporal

43
Q

What passes through foramen magnum?

A

brainstem, spinal cord, vertebral arteries, nerve plexuses, anterior and posterior spinal artery, meninges, spinal roots of accessory nerve.

44
Q

What passes through internal acoustic meatus and where?

A

CN 7, CN 8, and labyrinthine artery and vein, through styloid foramen, to ear and neck

45
Q

What passes through jugular foramen?

A

CN 9, 10, 11, internal jugular vein, into which sigmoid and petrosal sinus drain

46
Q

What passes through hypoglossal canal?

A

hypoglossal nerve and miningeal branch of ascending pharyngeal artery

47
Q

What passes through the condylar canal?

A

emissary vein

48
Q

How many foramina in posterior cranial fossa? and name them

A 
5 
internal acoustic meatus
hypoglossal canal
jugular foramen
foramen magnum
condylar foramen

Head And Neck Anatomy (3 decks)

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