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MRCS > H&N - Skull > Flashcards

H&N - Skull Flashcards

1
Q

Anterior cranial fossa foraminae

A

Foramen cecum

Olfactory foramen in cirbriform plate

Optic canal

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2
Q

Structures through foramen cecum

A

Emissary veins to nasal cavity

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3
Q

Structures through ciribriform plate

A

CN1

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4
Q

Structures through optic canal

A

CN2

Opthalmic artery

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5
Q

Bones that make up the anterior cranial fossa

A

Frontal and sphenoid

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6
Q

Middle cranial fossa foramenae

A

Superior orbital fissure

Foramen rotundom

Foramen ovale
Foramen spinosum

Foraman lacerolum

Carotid canal

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7
Q

Structures through superior orbital fissure

A

CN3,4,V1,6

Opthalmic veins

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8
Q

Structures through foramen rotundum

A

CN5V2

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9
Q

Structures through foramen ovale

A

OVALE

O tic ganglion
V3 (Mandibular nerve:3rd branch of trigeminal)
A ccessory meningeal artery
L esser petrosal nerve (of CN9)
E missary veins

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10
Q

Structures through foramen spinosum

A

Middle meningeal artery (branch of maxillary artery)

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11
Q

Structures through carotid canal

A

Internal carotid artery

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12
Q

Bones forming Middle craninal fossa

A

Sphenoid and temporal

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13
Q

Posterior cranial fossa foraminae

A

Foramen magnum

Internal acoustic meatus

Jugular foramen

Hypoglossal canal

Condylar canal

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14
Q

Structures through internal auditory meatus

A

CN7,8

Labyrinthine artery

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15
Q

Structures through Jugular foramen

A

CN9,10,11

Inferior petrosal sinus, sigmoid sinus (forming internal jugular vein)

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16
Q

Structures through hypoglossal canal

A

CN12

Meningeal branch of the ascending pharyngeal artery

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17
Q

Structures through condylar canal

A

Emissary veins

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18
Q

Structures through foramen magnum

A

End of brainstem/beginning of spinal cord

Vertebral arteries

Spinal roots of the accessory nerve

Meninges

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19
Q

Which bones make up the posterior cranial fossa

A

Occipital and temporal

(small part of sphenoid and parietal)

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20
Q

Structures through foramen lacerum

A

Greater petrosal nerve (branch of facial nerve)

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21
Q

Greater petrosal nerve supplies

A

Branch of facial nerve

Glands above the level of mouth

(eg lacrimal gland)

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22
Q

Lesser petrosal nerve supplies

A

Branch of CNIX glossopharyngeal

Supplies parotid gland

23
Q

Structures through supra-orbital foramen

A

Supra-orbital nerve and vessels

24
Q

Structures through infra-orbital foramen

A

Infra-orbital nerve and vessels

25
Q

Structures through mental foramen

A

Mental nerve and vessels

26
Q

Structures through parietal foramen

A

Emissery veins

27
Q

Structures through incisive foramen

A

Nasopalatine nerve

Sphenopalatine vessels

28
Q

Structures through greater palatine foramen

A

Greater palatine nerve and vessels

29
Q

Structures though lesser palatine foramina

A

lesser palatine nerve and vessels

30
Q

Structures through pterygoid canal

A

pterygoid nerve and vessels

31
Q

Structures through foramen lacerum

A

filled with cartilage

32
Q

Structures through formen magnum

A

Spinal cord

Vertebral arteries

Anterior and posterior spinal arteries

Root of CN11

Meninges

33
Q

Structures through condylar canal

A

emissary veins

34
Q

Structures through stylomastoid foramen

A

CN7

35
Q

Which bones form the pterion region

A

Frontal

Parietal

Sphenoid

Temporal

36
Q

Structures through the inferior orbital fissure

A

Zygomatic n

Infraorbital nerve n

Inferior opthalmic v

Maxillary n

37
Q

Which CN innervates levator palpebrae superioris

A

CN3

38
Q

Which branch of trigeminal nerve has both motor and sensory innervations

A

Mandibular

39
Q

What bones make up the orbit

A

7 bones

Frontal

Zygomatic

Maxillary

Palatine

Nasal

Ethmoid

Sphenoid

40
Q

Extraocular eye muscles

A

Most originate from tendinous ring off sphenoid bone

Also levator palipibrae superioris (innervated by CN3 and SNS)

41
Q

Actions of superior/inferior oblique eye muscles

A

SO: look down and in

IO: look up and in

42
Q

Superior view of skull sutures

A

Coronal

Sagittal

Lambdoid

43
Q

Sutures of lateral view of skull

A

Squamous: parietal and temporal bone

44
Q

Sutures of anterior side of skull

A
45
Q

Mandibular anatomy

A

Condylar process

Coranoid process

angle

Body

Ramus

46
Q

Which area of skull is void of periosteum

A

Temporal fossa

Instead covered by deep fascia of temporalis muscle

47
Q

Inferior view of skull important structures

A
48
Q

Path of ICA entering skull

A

Enters skull through carotid canal

Leaves skull through lacerum foramen

49
Q

What are the branches of V1

A

Frontal - supraorbital, lacrimal, nasociliary

sensation of scalp/forehead/corenea/nose/parts of meninges

50
Q

What are the branches of V2

A

Sesnsation of lower eyelid/cheek/upper teeth/gums/nasal. mucosa/ palate/roof of pharynx/maxillary, ethmoid, sphenoid sinuses, parts of meninges

51
Q

What are the branches of V3

A

Motor

Branches from trunk
Motor - n to medial pterygoid
- gives of tensor palatini/tensor tympani

Branches from anterior division
- motor: temporalis/masseter/lateral pterygoid

  • sensory: buccal nerve

Branches from posterior division
1. auriculotemporal

  1. lingual
  2. INferior alveolar
52
Q

What are the ganglia of trigeminal nerve

A

Otic - suspended from mandibular - CN IV (tympanic branch)–> parotid

Pterygopalatine - suspended from maxillary - CN VII (greater petrosal) –> lacrimal

Submandibular - suspended from lingual - CN VII (Chorda tympani) —> submandibular/sublingual glands

Ciliary - suspended from nasociliary - CN III —> sensory to cornea/iris - sympathetic - dilates pupil - parasympathetic - ciliary and constrictor muscles

53
Q

Describe the path of the facial nerve

A

Into IAM

Forms geniculate ganglion

Divides into
- greater petrosal (to pterygopalatine ganglion)

  • lesser petrosal nerve to otic ganglion
  • nerve to stapedius
  • chorda tympani

LEAVES IAM AND SKULL via stylomastoid canal

before this gives
- n to digastric
- n to stylohyoid
- posterior auricular n

MRCS (29 decks)

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