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A & P: 2 > Cranium And Sinuses > Flashcards

Cranium And Sinuses Flashcards

1
Q

Define the globella

A

Smooth portion between the eyebrows

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2
Q

Define Nasion

A

Bridge of nose between the eyes

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3
Q

Define superciliary arch

A

Ridge of bone beneath the eyebrows

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4
Q

Define Supraorbital groove

A

Groove just above the superciliary arches

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5
Q

Define supraorbital margin

A

Upper rim of the eye socket

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6
Q

Mid lateral orbital margin

A

Lateral rim of the eye socket

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7
Q

Define infraorbital margin

A

Lower rim of the eye socket

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8
Q

Define inner canthus

A

Medial junction of the eyelids

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9
Q

Define outer canthus

A

Lateral junction of the eyelids

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10
Q

Define the Acanthion

A

Area between the nose and the upper lip (mustache area)

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11
Q

Define Mentum

A

Chin

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12
Q

Define the vertex

A

Highest point of the skull

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13
Q

What is the mandible angle called

A

The gonion

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14
Q

Define the auricle

A

Ear flap that includes tragus

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15
Q

What is TEA*

A

Top of ear attachment (to scalp)

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16
Q

Define external auditory meatus

A

Ear canal

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17
Q

Define Inion

A

Aka external occipital protuberance (EOP) bony projection on back of head

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18
Q

What parts make up the calavarium

A

Frontal bone
Parietal bones
Occipital bone

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19
Q

What does the frontal bone include

A

The forehead

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20
Q

What do your parietal bones include

A

Upper lateral skull

21
Q

What does your occipital bone include

A

Back of skull

22
Q

What bones make up the cranial floor

A

Sphenoid bone
Temporal bone
Ethmoid bone

23
Q

What are the parts of the frontal bone of the calvarium

A

The squamosal (vertical ) portion
- superciliary arch
- Supraorbital groove

The orbital (horizontal ) portion
-begins at the Supra orbital margin ( top of eye socket )

24
Q

What are the parts of the parietal bones of the calvarium

A

The vertex
- where partials join the frontal
- highest point of cranium

The parietal eminence (tubercle )
-widest portion of the skull

25
Q

What are the parts of the occipital bone that make up the calvarium

A

The squamosal portion the has the EOP

The condylar (base of the skull which is foramen magnum) & occipital condyles

The Clivus (just anterior to foramen magnum)

Jugular foramen ( lateral to foramen magnum for internal jugular vein)

26
Q

What bones make up the cranial floor

A

Temporal bones, sphenoid bones & Ethmoid bone

27
Q

What part of the temporal bone make up the cranial floor

A

The squamosal portion, mastoid portion, Petrous portion

28
Q

What parts of the sphenoid bone make up the cranium floor

A

Sella turcica, greater wings , lesser wings, pterygoid process

29
Q

What parts of the ethmoid bone make up the cranial floor

A

Labryinths, perpendicular plate, & cribriform & crista galli

30
Q

What are the cranial floor landmarks

A

Supraorbital groove and TEA ( top ear attachment)

31
Q

What does does the supraorbital groove correspond with

A

The upper cranial floor ( orbital roof)

32
Q

What does the TEA ( top of ear attachment) correspond with

A

The level of the petrous ridges

33
Q

Name the skull sutures and where they are located

A

Sagittal suture ( union of both parietals down the MSP)

Coronal suture ( union of the frontal bone to both parietals

Squamosal suture ( union of temporal to each parietal )

Lambdoidal suture ( union of the occipital bone to both parietals)

34
Q

What type of movement are cranial sutures

A

Synarthrodial

35
Q

Define the Bregma

A

Union of the sagittal suture with coronal suture

36
Q

Define the Lambda

A

Union of the sagittal and lambdoidal suture

37
Q

Define Pterions

A

Union of sqamosal suture and coronal suture

38
Q

Define Asterions

A

Union of squamosal and lambdoidal suture

39
Q

What are fontanels

A

Soft spots on and infants skull prior to ossification

40
Q

Describe the anterior fontanel

A

The soft bregma ( fuses @18 months)

41
Q

Describe the posterior fontanel

A

The soft lambda ( fuses @ 4-6 months)

42
Q

Define mesocephalic

A

Average shaped skull
PR’s 47 degrees to MSP

43
Q

Define brachycephalic

A

Fat skull
PR’s 54 degree to MSP

44
Q

Define dolichocephalic

A

Thin skull
PR’s 40 degrees to MSP

45
Q

Describe frontal sinuses

A

Located between the inner and outer tables of frontal bone

Asymmetrical

Completely forms @ age 6

46
Q

Describe ethmoid sinuses

A

Air cells located with the ethmoidal labyrinth between the orbits

Symmetrical

47
Q

Describe maxillary sinuses

A

Within the body of the maxilla

Triangular shaped when viewed anteriorly

Symmetrical

48
Q

Describe sphenoid sinuses

A

Sinus within the body of sphenoid directly beneath the sella turcica

49
Q

What is the osteomeatal complex

A

The connection network between the maxillary, frontal, and ethmoid sinuses

A & P: 2 (17 decks)

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