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  1. 80 bones
    Lie along longitudinal axis
    Skull, hyoid, vertebrae, ribs, sternum, ear ossicle
    Axial skeleton
  2. 126 bones
    Upper & lower limbs and pelvic & pectoral girdle
    Appendicular Skeleton
  3. Protect brain & house ear ossicles
    Muscle attachment for jaw, neck & facial muscle
    Cranial bones
  4. Protect delicate sense organs - smell, taste, vision
    Support entrances to digestive and respiratory systems
    Facial bones
  5. sides & roof of cranial cavity
    Parietal Bones
  6. Zygomatic process forms part of arch
    External auditory meatus
    Mastoid process
    mandibular fossa (TMJ)
    Temporal Bones
  7. Foramen magnum
    Occipital condyle
    Occipital Bone
  8. Middle part at the base of the skull
    Sphenoidal sinuses
    Sella turcica holds pituitary glan
    Sphenoid Bone
  9. Cranial floor, lateral nasal walls & nasal septum
    Cribriform plate & olfactory nerves
    Ethmoidal sinuses
    Ethmoid Bone
  10. Lateral masses contain ethmoid sinuses
    Perpendicular plate is upper part of nasal septum
    Superior & middle nasal concha or turbinates– filters & warms air
    Ethmoid Bone
  11. Paired cavities in ethmoid, sphenoid, frontal and maxillary
    Lined with mucous membranes and open into nasal cavity
    Resonating chambers for voice, lighten the skull
    Sinusitis is inflammation of the membrane (allergy)
    Paranasal Sinuses
  12. Immovable joints located between skull bone
  13. Dense connective tissue membrane-filled space
    Unossified at birth but close early in a child's life.
    Fetal skull passesthrough the birthcanal.
    Rapid growth of thebrain during infancy
    Soft spots
  14. U-shaped bone in the neck
    Does not articulate with other bones
    Supports the tongue and attachment site for neck and pharynx muscles
    Hyoid Bone
  15. Supports the body and head
    Surrounds and protects the spinal cord
    Attachment sites for ribs and back muscle
    Vertebral Column
  16. Backbone or spine built of ____ vertebra
  17. What are the 5 vertebral regions?
    • 1. Cervical vertebrae (7) in the neck–
    • 2. Thoracic vertebrae ( 12 ) in the thorax
    • 3. Lumbar vertebrae ( 5 ) in the low back region
    • 4. Sacrum (5, fused)
    • 5. Coccyx (4, fused)
  18. Typical Vertebrae: weight bearing
  19. Typical Vertebrae: Pedicles, laminae
    Vertebral arch
  20. Typical Vertebrae: 2 transverse, 1 spinous, 1 articular
  21. Another name for spinal canal
    Vertebral canal
  22. What is an Intervertebral foramen?
    2 vertebral notches together
  23. Intervertebral Discs: Between adjacent vertebrae absorbs _____ _______.
    vertical shock
  24. What permits various movement of the vertebral column?
    Intervertebral Disc
  25. What is the intervertebral disc composed of?
    Fibrocartilage ring with a pulpy center
  26. Protrusion of the nucleus pulposus
    Most commonly in lumbar region
    Pressure on spinal nerves causes pain
    Surgical removal of disc after laminectom
    Herniated (Slipped) Disc
  27. Normal Curves of the Vertebral Column: thoracic and sacral are formed during fetal development
    Primary Curves
  28. Normal Curves of the Vertebral Column:
    Cervical is formed when infant raises head at 4 months
    Lumbar forms when infant sits up & begins to walk at 1 year
    Secondary Curves
  29. Abnormal curves of the spine:
    Lateral bending of the column
  30. Abnormal curves of the spine:
    Exaggerated thoracic curve
  31. Abnormal curves of the spine:
    Exaggerated lumbar curve
  32. What is composed of the:
    Bony cage flattened from front to back
    Sternum (breastbone)
  33. Where are the ribs attached to the vertebrae?
    At the body and transverse process
  34. Tubercle articulates with ________ process
    Head articulates with _________ bodies
Card Set:
2011-09-30 00:12:05
Axial Skeleton

Axial Skeleton
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