Unit 4 Skull

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  2. Calvarium (skull cap) is made up of which 4 bones?

    The floor of the skull is made up of which 4 bones?
    Calvarium - Frontal, Occipital, Parietals (2)

    Floor - Ethmoid, Sphenoid, Temporals (2)
  3. Calvarium bones are classified as ____, whereas floor bones are classified as ____
    Flat, Irregular
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    These 4 bones make up the _____?
    Calvarium
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    These 4 bones make up the ____?
    Floor
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    What’s 1?
    Supraorbital Margin (SOM) - superior rim of each orbit
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    What’s 2?
    Superciliary ridge (eyebrows)
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    What’s 3?
    Glabella – raised area between eyebrows just above bridge of nose
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    What’s 4?
    Frontal Tuberosity - large, round forehead prominences
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    What’s 5?
    Supraorbital groove - depression above each eyebrow
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    What’s 6?
    Supraorbital notch (foramen)
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    What part of which bone is this whole diagram?
    Orbital Portion of Frontal Bone

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  13. Occipital Bone

    _________ – rounded portion that forms most of the back of the head
    - ____ (external occipital protuberance) – prominent bump on inferoposterior surface

    _________ – passageway for spinal cord

    _________ – oval, convex surfaces
    - ______ – articulate with superior articular process (facets) of C1 to form atlantooccipital joint
    • Squamous portion, Inion
    • Foramen magnum
    • Condylar portions, Occipital condyles
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    This diagram is of what bone?
    Occipital bone

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  15. Temporal Bone 
    3 main parts:
    ______ - (vertical portion) – thin upper part (vulnerable part of skull for fracture)

    ______ - behind ear

    ______ - thickest & densest part of the head that houses organs of hearing & equilibrium (balance)
    • Squamous
    • Mastoid portion 
    • Petrous portion
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    Which bone is in this diagram?
    Temporal

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    What part of which bone?
    Petrous portion of Temporal Bone

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  19. Sphenoid Bone 
    2 main parts:
    _____ - lateral portions, contains 2 pairs (greater and lesser)
    _____ - Central portion, contains Sphenoid sinuses
    • Wings
    • Body
  20. What’s the only bone that articulates with the 7 other cranial bones?
    Sphenoid
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    What part of which bone?
    Body of Sphenoid

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    Which part of which bone is shown in this diagram?
    Wings of Sphenoid

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    What’s 1?
    Superior orbital fissure
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    What’s 2?
    Lesser wing
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    What’s 3?
    Greater wing
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    What’s 4?
    Optic foramen
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    What’s 5?
    Optic canal
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    What’s 6?
    Chiasmatic (optic) groove
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    What’s 7?
    Medial pterygoid process
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    What’s 8?
    Pterygoid hamulus
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    What’s 9?
    Lateral pterygoid process
  32. Ethmoid Bone

    Anterior part of floor that extends inferiorly

    ________ – upper horizontal part that contains foramina for branches of olfactory nerves
    - _____ – conical process

    ________ – below floor of cranium; helps to form part of nasal septum

    ________ – form medial walls of orbits & lateral walls of nasal cavity; contain _____
    - Superior & middle nasal conchae (turbinates) – scroll shaped projections of bone
    • - Cribiform plate, Crista galli
    • - Perpendicular plate
    • - Lateral labrynths, ethmoid sinuses
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    • 1. Right asterion
    • 2. Lambdoidal suture
    • 3. Squamousal suture
    • 4. Right parietal bone
    • 5. Coronal suture
    • 6. Bregma 
    • 7. Right pterion 
    • 8. Right sphenoid bone
    • 9. Right temporal bone
    • 10. Sagittal suture
    • 11. Bregma
    • 12. Frontal bone
    • 13. Right sphenoid bone
    • 14. Right pterion
    • 15. Squamosal suture
    • 16. Coronal suture
    • 17. Sagittarius suture
    • 18. Right parietal bone
    • 19. Lambda
    • 20. Right asterion 
    • 21. Left asterion
    • 22. Occipital bone
    • 23. Lambdoidal suture
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    • 1. Supraorbital margin
    • 2. Crista galli
    • 3. Sagittal suture
    • 4. Frontal bone
    • 5. Lambdoidal suture
    • 6. Petrous ridge
    • 7. Superior orbital fissure
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    • 1. Dorsum sellae of sphenoid
    • 2. Parietal bone
    • 3. Occipital bone
    • 4. Foramen Magnum
    • 5. Petrous ridge
    • 6. Posterior clinoid process
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    What’s 1,2, & 3?
    • 1. Vertex
    • 2. Coronal Suture
    • 3. Frontal bone
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    What’s 4, 5, & 6?
    • 4. Orbital plates
    • 5. Cribiform plate
    • 6. Sella turcica
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    What’s 7, 8, & 9?
    • 7. Body of sphenoid
    • 8. EAM
    • 9. Mastoids
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    What’s 10, 11, & 12?
    • 10. Occipital bone
    • 11. Lambdoidal suture
    • 12. Clivus
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    What’s 13, 14, & 15?
    • 13. Dorsum sellae
    • 14. Posterior clinoid
    • 15. Anterior clinoid
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    • 1. Supraorbital groove (SOG)
    • 2. Supraciliary ridge (arch)
    • 3. Mental point
    • 4. Angle (gonion)
    • 5. Acanthion
    • 6. Interpupilary line (IPL)
    • 7. Nasion 
    • 8. Glabella
    • 9. Midsagittal plane (MSP)
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    • 1. Glabella
    • 2. Nasion
    • 3. Acanthion
    • 4. Mental point
    • 5. Angle (gonion)
    • 6. Tragus 
    • 7. Auricle (pinna)
    • 8. Top of ear attachment (TEA)
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    Positioning Lines
    • 1. GML - Glabella to EAM
    • 2. OML - outer canthus to EAM
    • 3. IOML - infraorbital margin to EAM
    • 4. AML - acanthion to EAM
    • 5. LML - junction of lips to EAM
    • 6. MML - mental point to EAM
    • 7. GAL - Glabella to alveolar process of Maxilla
    • 8. EAM - External acoustic meatus
  44. The 4 routine Skull positions are?
    • PA Skull
    • PA Axial (Caldwell method)
    • AP Axial (Towne method)
    • Lateral Skull
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    • 1. Rotation 
    • 2. Tilt
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    PA Skull
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    PA Skull
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    PA Axial Skull (Caldwell method)
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    PA Axial Skull (Caldwell method)
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    AP Axial Skull (Towne Method)
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    AP Axial Skull (Towne method)
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    Lateral Skull
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    Lateral Skull - Horizonral beam
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    Lateral Skull
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    Are both correct, or is either one tilted, rotated, or both?
    • Left is correct
    • Right is rotated
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    Are both correct, or is either one tilted, rotated, or both?
    • 1. Correct
    • 2. Rotated
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    Are both correct, or is either one tilted, rotated or both?
    • Left - Correct
    • Right - Rotated & Tilted
  58. Pathological Conditions
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    Fracture (linear)
  59. Pathological Conditions Image Upload 59
    Fracture (depressed)
  60. Pathological Conditions 
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    Multiple myeloma (“Swiss cheese pattern”)
  61. Pathological Conditions
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    Paget disease (“cotton ball” appearance)
Author
Marc817
ID
347339
Card Set
Unit 4 Skull
Description
Unit 4 Skull
Updated