1. Home
  2. Flashcards
  3. Preview

Unit 4 Skull

  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

  4. These 4 bones make up the _____?
    Calvarium

  5. These 4 bones make up the ____?
    Floor

  6. What’s 1?
    Supraorbital Margin (SOM) - superior rim of each orbit

  7. What’s 2?
    Superciliary ridge (eyebrows)

  8. What’s 3?
    Glabella – raised area between eyebrows just above bridge of nose

  9. What’s 4?
    Frontal Tuberosity - large, round forehead prominences

  10. What’s 5?
    Supraorbital groove - depression above each eyebrow

  11. What’s 6?
    Supraorbital notch (foramen)

  12. What part of which bone is this whole diagram?
    Orbital Portion of Frontal Bone

  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

  14. This diagram is of what bone?
    Occipital bone

  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

  16. Which bone is in this diagram?
    Temporal


  17. What part of which bone?
    Petrous portion of Temporal Bone

  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

  21. What part of which bone?
    Body of Sphenoid


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


  23. What’s 1?
    Superior orbital fissure

  24. What’s 2?
    Lesser wing

  25. What’s 3?
    Greater wing

  26. What’s 4?
    Optic foramen

  27. What’s 5?
    Optic canal

  28. What’s 6?
    Chiasmatic (optic) groove

  29. What’s 7?
    Medial pterygoid process

  30. What’s 8?
    Pterygoid hamulus

  31. 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
    • 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
    • 1. Supraorbital margin
    • 2. Crista galli
    • 3. Sagittal suture
    • 4. Frontal bone
    • 5. Lambdoidal suture
    • 6. Petrous ridge
    • 7. Superior orbital fissure
    • 1. Dorsum sellae of sphenoid
    • 2. Parietal bone
    • 3. Occipital bone
    • 4. Foramen Magnum
    • 5. Petrous ridge
    • 6. Posterior clinoid process

  36. What’s 1,2, & 3?
    • 1. Vertex
    • 2. Coronal Suture
    • 3. Frontal bone

  37. What’s 4, 5, & 6?
    • 4. Orbital plates
    • 5. Cribiform plate
    • 6. Sella turcica

  38. What’s 7, 8, & 9?
    • 7. Body of sphenoid
    • 8. EAM
    • 9. Mastoids

  39. What’s 10, 11, & 12?
    • 10. Occipital bone
    • 11. Lambdoidal suture
    • 12. Clivus

  40. What’s 13, 14, & 15?
    • 13. Dorsum sellae
    • 14. Posterior clinoid
    • 15. Anterior clinoid
    • 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)
    • 1. Glabella
    • 2. Nasion
    • 3. Acanthion
    • 4. Mental point
    • 5. Angle (gonion)
    • 6. Tragus 
    • 7. Auricle (pinna)
    • 8. Top of ear attachment (TEA)

  43. 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
    • 1. Rotation 
    • 2. Tilt
  46. PA Skull
  47. PA Skull
  48. PA Axial Skull (Caldwell method)
  49. PA Axial Skull (Caldwell method)
  50. AP Axial Skull (Towne Method)
  51. AP Axial Skull (Towne method)
  52. Lateral Skull
  53. Lateral Skull - Horizonral beam
  54. Lateral Skull

  55. Are both correct, or is either one tilted, rotated, or both?
    • Left is correct
    • Right is rotated

  56. Are both correct, or is either one tilted, rotated, or both?
    • 1. Correct
    • 2. Rotated

  57. Are both correct, or is either one tilted, rotated or both?
    • Left - Correct
    • Right - Rotated & Tilted
  58. Pathological Conditions
    Fracture (linear)
  59. Pathological Conditions 
    Fracture (depressed)
  60. Pathological Conditions 
    Multiple myeloma (“Swiss cheese pattern”)
  61. Pathological Conditions
    Paget disease (“cotton ball” appearance)
Author
Marc817
ID
347339
Card Set
Unit 4 Skull
Description
Unit 4 Skull
Updated

  1. Home
  2. Flashcards
  3. Preview