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Spring 2023 > Skull anatomy > Flashcards

Skull anatomy Flashcards

1
Q

How many cranial bones are there? Name them.

A

8, parietla, temporal, occipital, frontal, sphenoid, ethmoid

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2
Q

How many facial bones are there? Name them

A

14, Mandible, maxillary(2), lacrimal(2), zygomatic(2), nasal(2), Palatine(2), Vomer, inferior nasal conchae(2)

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3
Q

Name the cranial sutures.

A

Coronal, sagittal, parietal, temporal

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4
Q

What are the 2 portions of the frontal bone? What do they form?

A

Squamous - forms forehead
Orbital- forms superior part of orbit

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5
Q

What other bones does the frontal bone articulate with?

A

Parietal, sphenoid, ethmoid, and lacrimal

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6
Q

What is the parietal eminence?

A

Widest part of skull

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7
Q

What other bones does the parietal bone articulate with?

A

Every cranial bone except ethmoid

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8
Q

Name the parts of the occipital bone.

A

squama, External occipital protuberence(inion), occipital condyle, basilar portion,

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9
Q

What is the clivus?

A

Support structure for pons

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10
Q

What passes through the foramen magnum?

A

Medulla oblongata, spinal cord

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11
Q

What other bones does the occipital bone articulate with?

A

Parietal, sphenoid, temporal

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12
Q

What are the parts of the ethmoid bone?

A

Horizontal plate, olfactory foramina, crisia galli

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13
Q

Which bone contains the ethmoidal notch where the ethmoid fits into?

A

Frontal bone

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14
Q

What is the crista galli?

A

Point of attachment for folx cerebri

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15
Q

Where are the ethmoidal sinuses located?

A

Labrynths

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16
Q

What bones does the ethmoid articulate with?

A

Frontal and sphenoid

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17
Q

Name the parts of the sphenoid bone.

A

Greater wing, lesser wing, body

18
Q

What sits within the sella turcica?

A

Pituitary gland

19
Q

Name the parts of the sella turcica.

A

Dorsum sellae, Tuberculum sellae, anterior+posterior clinoid processes

20
Q

Which part of the sphenoid bone contain the foramen rotundum, ovale, and spinosum?

A

Greater wing

21
Q

Which bones does the sphenoid bone articulate with?

A

Every cranial bone

22
Q

Where is the temporal bone located?

A

Side of base of skull

23
Q

What are the parts of the temporal bone?

A

squamous, mastoid, tympanic, styloid, zygomatic

24
Q

What is the thickest and densest bony structure of the cranium? Where is it located?

A

Petrous portion, contains all organs of hearing and balance

25
Q

EAM

A

External auditory meatus

26
Q

IPL

A

inter pupitary line

27
Q

GML

A

Glabellomeatal line

28
Q

OML

A

orbital meatal line

29
Q

IOML

A

Infra orbital meatal line

30
Q

AML

A

Acanthiomeatal line

31
Q

MML

A

mentomeatal line

32
Q

How many degrees difference is there between the OML and IOML?

A

7 degrees

33
Q

Explain the difference between the Mesocephalic, brachycephalic, and dolichocephalic skulls. What are the degrees difference between the petrous ridges and MSP for each?

A

Mesocephalic= average skull shape, petrous ridges 47 degress to msp
Brachycephalic= broader side to side, shorter front to back, more shallow on inside, 54 degree angle between petrous ridges and msp
dolichocephalic= 40 degree angle between petrous ridges and msp, increased anterior and posterior diameter

34
Q

Outer canthus

A

outer edge of eye

35
Q

Infraorbital margin

A

bottom of orbit

36
Q

Inner canthus

A

inside of eye

37
Q

Nasion

A

Nasal bone articulates with frontal bone

38
Q

Glabella

A

Flat part between eye brows

39
Q

Acanthion

A

Tip of anterior nasal spine

40
Q

Gonion

A

Angle of mandible

41
Q

Mental point

A

Anterior portion of mandible

Spring 2023 (81 decks)

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