skull Flashcards

1
Q

Protective housing of the brain

A

skull / calvarium

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2
Q

bones of skull

A

22

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3
Q

cranium

A

● Frontal - 1
● Occipital - 1
● Temporal - 2
● Parietal - 2
● Ethmoidal -1
● Sphenoidal -1

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4
Q

● where the Frontal Sinus is located and serves as the roof of the orbit
● articulates with 4 cranial bones, and with 8 facial bones

A

frontal bone

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5
Q

● largest portion of the cranium.
● articulates with 5 cranial bones

A

parietal bone

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6
Q

● inferoposterior part of the cranium
● where the Foramen Magnum is located
● articulates with Atlas through
Atlanto-Occipital Joint.
● articulates with 5 cranial bones

A

occipital bone

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7
Q

● location of Pars Petrosa or Petrous Pyramid that houses the organ of hearing and balance
● contains the mastoid portion of the skull
● location of TM fossa
● articulates w/ 3 cranial bones
● “squamous portion”
● most vulnerable portion of the skull to fracture

A

temporal bone

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8
Q
  • smallest among the cranial bones of the skull
    ● contains the ethmoidal sinuses w/in its labyrinths
    ● where the Crista Galli is located (E.C.G).
    ● articulates w/ 2 cranial and 11 facial bones
A

ethmoid bone

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9
Q

serves as the anterior attachment of the falx cerebri

A

crista galli

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10
Q

● bat shape
● location of Sella Turcica / Turkish
Saddle
● contains the sphenoid sinuses.
● contains the foramen Rotundum, Ovale, Spinosum located w/in the greater wing of the sphenoid, and also the Optic
Foramen
● serves as the keystone of the cranium
● articulates w/ all 7 cranial bones, and 5
facial bones

A

sphenoid bone

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11
Q

bones of the cranial vault are composed of two plates of compact tissue separated by an inner layer of spongy tissue

A

diploe

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12
Q

● articulations or joints of the cranium
● classified as fibrous joints (Immovable/
Synarthrodial-type joints).

A

sutures

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13
Q

separates the frontal
bone from the two parietal bones.

A

coronal suture

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14
Q

separating the two
parietal bones in the midline.

A

sagittal suture

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15
Q

separates the two
parietal bones from the occipital bone.

A

lambdoidal suture

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16
Q

are formed by the inferior junctions of the two parietal bones with their respective temporal bones

A

squamosal sutures

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17
Q

anterior end of the sagittal suture.

A

bregma

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18
Q

posterior end of sagittal suture

A

lambda

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19
Q

are points at the junction of
the parietals, temporals, and the greater wings of the sphenoid. (The ____ are
at the posterior end of the sphenoparietal suture).

A

pterions

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20
Q

are points posterior to the ear where the squamosal and lambdoidal sutures meet.

A

asterions

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21
Q

membrane-covered openings or “soft spots.”

A

fontanels

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22
Q

● provide structure, shape, and support for the face.
● also form a protective housing for the upper ends of the respiratory and digestive tracts.

A

facial bones

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23
Q

14 facial bones

A

● Maxillae - 2
● Zygomatic Bones - 2
● Mandible - 1
● Nasal Bones - 2
● Lacrimal Bones - 2
● Inferior Nasal Conchae - 2
● Vomer - 1
● Palatine- 2

24
Q

● largest immovable bones of the face.
● where the Antrum of Highmore is
located

A

maxillary bones

25
Q

form the prominence of the cheek (Zygoma / Malar Bone).

A

zygomatic bone

26
Q

bridge of the nose

A

nasal bone

27
Q

smallest facial bones

A

lacrimal bones

28
Q

turbinates, scroll shape

A

inferior nasal conchae

29
Q

L shape

A

palatine bones

30
Q

● plowshare
● inferior part of the nasal septum

A

vomer

31
Q

● largest and densest facial bone.
● only movable bone in adult skull

A

mandible

32
Q

40 degrees

A

dolichocephalic

33
Q

47 degrees

A

mesocephalic

34
Q

54 degrees

A

brachycephalic

35
Q

divides the body into left and right halves.

A

MSP

36
Q

line that connects the pupils or the outer canthi of the patient’s eyes.

A

Inter Pupillary Line (IPL/ IOL)

37
Q

smooth, slightly raised triangular area between and slightly superior to the eyebrows and above the bridge of the nose.

A

Glabella

38
Q

located at the junction of the two nasal bones and the frontal bone.

A

Nasion

39
Q

“Little Thorn”, midline point
at the junction of the upper lip and the nasal septum.

A

Acanthion

40
Q

lower posterior angle on each side of the jaw or mandible.

A

Gonion

41
Q

large flap of ear made of cartilage

A

auricle/pinna

42
Q

small cartilaginous flap that covers the opening of the ear

A

tragus

43
Q

refers to the superior attachment of the auricle, or the part where the side frames of eyeglasses rest, corresponds to the highest level of the petrous ridge on each side.

A

TEA

44
Q

OML

A

radiographic baseline

45
Q

IOML

A

Anthropological Baseline, Reid’s
Baseline, Frankfurter line

46
Q

OML to IOML

A

7 degrees

47
Q

OML to GML

A

8 degrees

48
Q

EOP

A

Inion

49
Q

Anterior Nasal Spine

A

Acanthion

50
Q

large air-filled cavities lined with mucous membrane, which is continuous with the nasal cavity

A

paranasal sinuses

51
Q

pathways of communication between the frontal, maxillary, and ethmoid sinuses that provide drainage between these sinus cavities

A

Infundibulum

52
Q

Irregular or jagged fracture of the skull

A

linear fractures

53
Q

Ping-Pong fracture. A fragment of bone that is separated and depressed into the cranial cavity.

A

depression fx

54
Q

Fracture located at the base of the skull.

A

basal skull fx

55
Q

located to one side of a structure that is caused by an impact or blow on the opposite side

A

contrecoup fx