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H&N > H&N 2: Skull & Intracranial Region #2 > Flashcards

H&N 2: Skull & Intracranial Region #2 Flashcards

1
Q

What is sig of skull sutures?

A
  • allow bones to move during birth acting like expansion joint allowing bone to enlarge evenly as brain grows and skull expands resulting in symm shaped head
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2
Q

How do sutures differ between people?

A
  • everyone has diff patterns of sutures

- some have wormian/extra bones

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3
Q

What are some of the theories about sutures?

A
  • some scientists believe area around sutures are dynamic + move throughout whole life
  • some believe there is complete ossification by 30/40
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4
Q

What are sutures?

A

fibrous joints (synarthroses) between bones of skull which become immobile and ossified with age

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5
Q

List features of foetal skull

A
  1. Future coronal suture
  2. Ant. fontanel
  3. Anterolat. fontanel
  4. Future Squamosal suture
  5. Posterolat. fontanel
  6. Future lambdoidal suture
  7. Ext. Acoustic meatus
  8. Future Sagittal suture
  9. Post. fontanel
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6
Q

What is metopic suture of of foetal skull?

A
  • in between plates of frontal bone but closes up in most people
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7
Q

How does neonatal and older adult skull compare?

A
  • older people lose teeth and resemble neonate structure
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8
Q

What does skull art with?

A

cervical spine via occipital condyle

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9
Q

What passes through foramen magnum?

A

spinal cord which becomes medulla oblongata

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10
Q

What is vert artery?

A
  • goes through foramen transversarium

- carried blood to brain

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11
Q

What does vert prominens define?

A

cervical from thoracic vert

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12
Q

What is function of top 7 cervical vert?

A

provide support for neck structures

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13
Q

What does cervical spine allow?

A

allows us to move our head in flexion (forward), extension (back), lat. flexion (side to side) + rotation (turn head side to side)

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14
Q

What part of C1 art with occipital condyles?

A

sup. art facets

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15
Q

List 3 cranial fossae

A
  1. Ant.
  2. Middle
  3. Post.
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16
Q

What is middle cranial fossa made up of?

A
  • greater wings, body, sinus of sphenoid bones

- petrous part of temporal bone

17
Q

What makes up ant. cranial fossa?

A
  • frontal bone with frontal air sinuses
  • ethmoid
  • lesser wing of sphenoid
18
Q

What is sig about petrous part of temporal bone?

A

toughest part to protect inner ear

19
Q

What is post. cranial fossa?

A
  • temporal

- occipital

20
Q

What is sella turcica?

A
  • saddle-like prominence crossing midline on sup. surface of body of sphenoid
  • contains pit. gland
21
Q

List the foramina in intracranial region

A
  1. Cribiform plate
  2. Optic canal
  3. Sup. orbital fissure
  4. Foramen rotundum
  5. Foramen ovale
  6. Foramen lacerum
  7. Foramen spinosum
  8. Int. acoustic meatus
  9. Jugular foramen
  10. Hypglossal canal
22
Q

Which nerves comes through cribiform plate?

A

I

23
Q

Which nerve comes through optic canal?

A

II

24
Q

Which nerves come through SOF?

A

III, IV, V1, VI

25
Q

Which nerve comes through foramen rotundum?

A

V2

26
Q

Which nerve comes through foramen ovale?

A

V3

27
Q

Which nerves come through IAM?

A

VII, VIII

28
Q

Which nerves come through jugular foramen?

A

IX, X, XI

29
Q

Which nerve comes through hypoglossal canal?

A

XII

30
Q

Which nerves enable you to move your eyes?

A

III, IV + VI

31
Q

List 3 branches of trigeminal

A
  1. Opthalmic
  2. Maxillary
  3. Mandibular
32
Q

What is ass with foramen lacerum?

A

Int. carotid

33
Q

What comes out ext. acoustic meatus?

A

Ear drum

34
Q

List the 3 sutures

A
  1. Coronal
  2. Sagittal
  3. Lambdoid
35
Q

What is bregma?

A

where coronal + sagittal suture meet

36
Q

What is lamda?

A

where lambdoid + sagittal suture meet

H&N (10 decks)

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