Axial Skeleton questions

  1. Where is the temporal bone located and what does it articulate with?
    location: side of the skull (looks like a roosters head with the hair as a comb shape, beak as a pointer, wattles as the little ears (mastoid process example)

    articulates with sphenoid, parietal, and occipital bone
  2. Zygomatic process of the temporal bone articulates with what? what do they form?
    articulates with temporal process of zygomatic bone

    to form the zygomatic arch
  3. Where is the ethmoid bone located and what is on each side of the ethmoid bone?
    location? behind the bridge of the nose

    Superior side? cribriform plate (flat plate) with small holes in it called olfactory foramina (allows olfactory nerves to pass from olfactory organ to the brain), and the the crista galli seperates the cribriform plate into left and right halves

    anterior side? perpendicular plate (long vertical plate of bone) forms part of nasal septum

    on either side? tiny, curved, bone projections called superior & middle nasal conchae

    both sides (lateral)? lateral masses
  4. What does the sphenoid bone articulates with?
    frontal, parietal, occipital, ethmoid, and temporal bones of the cranium * palatine bones, zygomatic bones, vomer, & maxillae of the facial bones
  5. How many vertebrae's are there and how many in cervical, thoratic, and lumbar?
    total: 24 (my age)

    • cervical: 7
    • thoracic: 12
    • lumbar: 5
  6. What is the job of the atlas?
    atlas is C1 that is designed to pivot on the axis (C2), which permits you to turn your head from side to side. (allows you to say no)
  7. What does the atlas and axis together form?
    atlas (C1) and axis (C2) together form a pivot joint; therefore, when you turn your head from side to side, the atlas is rotating on the more stationary axis
  8. What is the only vertebrae that has a transverse foramen?
    cervical vertebrae
  9. What is the job of the body of vertebrae and articular processes?
    body - bears weight and increases in size as one moves down the vertebral column

    articular process - superior & inferior articular process that are used to join one vertebra to another
  10. What is the difference in looks of the thoracic vertebra vs. lumbar vertebra?
    • thoracic vertebra is a bird with the wings diagonal
    • \|/

    • lumbar vertebra is a bird with the wings horizontal
    • --|--
  11. What are the three parts the sternum is divided into and what is the sternum commonly called?
    commonly called breastbone

    divided into 3 parts: manubrium, body, and xiphoid process
  12. What does the manubrium, body, and xiphoid process articulate with?
    Manubrium - clavicles and coastal cartilages of the first pair of ribs

    Body -ribs through coastal cartilages (largest)

    Xiphoid process - does not articulate with another bone (smallest)
  13. How many pairs of ribs are they and what are their names?
    TOTAL: 12 pairs

    True ribs 1-7 - dirrectly attach to sternum through coastal cartilages

    False Ribs 8-10: do not directly attach to sternum

    Floating Ribs 11-12: have no connection to the sternum
Card Set
Axial Skeleton questions
axial skeleton questions and landmarks