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IT-RAD102 [MIDTERMS] > AXIAL: Calvarium > Flashcards

AXIAL: Calvarium Flashcards

1
Q

What are the two major divisions of the skull?

A
  1. Calvarium / Cranium
  2. Cranial base / Facial bones
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2
Q

A mnemonic for major bones of the calvarium?

A

STEP OF 8

S - Sphenoid
T - Temporal (2 bones)
E - Ethmoid
P - Parietal (2 bones)
O - Occipital
F - Frontal
8 - 8 major bones individually

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3
Q

The bone that forms the forehead

A

Frontal Bone (Squamous part of frontal bone)

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4
Q

This is the landmark for radiologic skull measurement ; inferior to the frontal bone, above the root of the nose

A

Glabella

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5
Q

Passageway of blood vessel that contributes to your eyes ; openings above the orbit

A

Supraorbital foramen

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6
Q

Thickened part which lie under the eyebrows ; where the forehead ends

A

Supraorbital margin

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7
Q

Forms most of the superior and lateral aspects of the skull

A

Parietal bone

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8
Q

This suture is between the frontal and parietal bone

A

Coronal suture

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9
Q

This suture is between the occipital and parietal bones

A

Lambdoid / Lambdoidal suture

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10
Q

This suture is between the temporal and parietal bones

A

Squamosal / Squamous suture

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11
Q

This suture is between the two parietal bones

A

Sagittal suture

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12
Q

Forms the inferolateral aspects of the skull and contribute to the middle cranial fossa

A

Temporal bone

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13
Q

What are the 3 major parts of the temporal bone?

A
  1. Squamous
  2. Tympanic
  3. Petrous
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14
Q

This is best viewed in lateral position

A

Temporal bone

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15
Q

This is formed when the zygomatic process of the temporal bone meets the zygomatic bone

A

Zygomatic arch

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16
Q

Wherein the condylar process of the mandible articulates with the mandibular fossa

A

Temporomandibular joint (TMJ)

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17
Q

This bone meets with the zygoma

A

Zygomatic process

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18
Q

where the sound enters the ear, thus enables sound waves to reach the eardrum

A

External Acoustic Meatus (EAM)

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19
Q

The 2 joints that connect your lower jaw to your skull ; collaboration of bone

A

TMJ

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20
Q

the thickest out of all the temporal bones

A

Petrous bone

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21
Q

This houses the middle and internal ear cavities

A

Petrous bone

22
Q

This supports the temporal brain

A

Middle cranial fossa

23
Q

This is the most lateral foramen which serves as a passageway for the jugular vein

A

Jugular foramen

24
Q

This is located exactly between the petrous temporal and sphenoid ; most medial portion

A

Foramen lacerum

25
Q

This is anterior to the jugular foramen which allows transmission of carotid artery into the cranial cavity

A

Carotid canal

26
Q

This transmits cranial nerves

A

Internal acoustic meatus

27
Q

What specific cranial nerves are passing through the internal acoustic meatus?

A

C7 and C8

28
Q

Round opening in the floor of the middle cranial fossa, located between the superior orbital fissure and foramen ovale

A

Foramen rotundum

29
Q

Oval in shape and is an opening between the atria in the fetal heart ; serves as passageway of mandibular nerve

A

Foramen ovale

30
Q

This is a foramen in the petrous bone which transmits 3 (nerve, artery, vein)

A

Foramen spinosum

31
Q

What are the three transmissions from the foramen spinosum consists of?

A
  1. Middle meningeal artery
  2. Middle meningeal vein
  3. Nervous spinosus
32
Q
  • This acts as an anchoring site for some neck muscles and this can also be felt as a lump just posterior to the ear
  • Dotted surface for air cells and air cavities
  • Regulates temp. in the skull
A

Mastoid process

33
Q

This is a needle-like process which is not just for neck attachment but also for tongue muscles

A

Styloid process

34
Q

This is a bone found in the cranium that forms most of the skull’s posterior wall and base

A

Occipital bone

35
Q

This supports the cerebellum of the brain

A

Posterior cranial fossa

36
Q

This is considered to be the largest foramen found in the skull wherein the spinal cord passes through

A

Foramen magnum

37
Q

Located on each lateral side of the foramen magnum wherein the C1 articulates

A

Occipital condyle

38
Q

This is the most bulging part of the posterior skull ; little hump on the back of the head

A

External occipital protuberance

39
Q
  • Bat-shaped bone
  • Keystone of the cranium, because it acts as a central wedge that articulates with all other cranial bones
  • Contributes to the middle cranial fossa and orbits
A

Sphenoid bone

40
Q

Forms the center of the sphenoid bone

A

Body

41
Q

This houses the pituitary gland

A

Sella Turcica (or hypophyseal fossa of sella turcica)

42
Q

Part of sphenoid bone found in the medial process that has a horn-like shape

A

Lesser wing

43
Q

Part of the sphenoid bone that projects laterally

A

Greater wing

44
Q

Part of the sphenoid bone in the interior portion which serves as an attachment for pterygoid muscles for chewing

A

Pterygoid process

45
Q
  • This also has a complex shape like the sphenoid bone
  • Helps to form the anterior cranial fossa
  • Forms part of the nasal septum and the lateral walls and roof of the nasal cavity
  • Contributes to the medial wall of the orbit
A

Ethmoid bone

46
Q

Forms the roof of nasal cavities ; floor of the anterior cranial fossa

A

Cribriform plate

47
Q

Dura mater of the brain is attached to this structure which helps secure the brain in the cranial activity

A

Crista galli

48
Q

Inferior portion of the ethmoid bone, which divides the nasal cavity from right to left

A

Perpendicular plate

49
Q

This is also known as wormian bones

A

Sutures

50
Q

This group of bones are best viewed on lateral position

A

Temporal bones

IT-RAD102 [MIDTERMS] (5 decks)

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