lab05 vertebrae ribs and rib articulation sternum skull review l.
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Lab05 Vertebrae Ribs and rib articulation Sternum Skull Review. Vertebral Column. Cervical. Backbone consists of 26 vertebrae. Five vertebral regions Cervical vertebrae (7) in the neck. Thoracic vertebrae (12) in the thorax. Lumbar vertebrae (5) in the lower back. Sacrum (5, fused).

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Presentation Transcript
vertebral column
Vertebral Column

Cervical

  • Backbone consists of 26 vertebrae.
  • Five vertebral regions
    • Cervical vertebrae(7) in the neck.
    • Thoracic vertebrae (12) in the thorax.
    • Lumbar vertebrae (5) in the lower back.
    • Sacrum (5, fused).
    • Coccyx (4, fused).

Thoracic

Lumbar

Sacrum

Coccyx

general features
General Features

Spinous process

Transverse process

Lamina

Superior articular process

Vertebral foramen

Pedicle

Body

typical cervical vertebra c3 c7
Typical Cervical Vertebra (C3-C7)
  • Smaller bodies
  • Larger spinal canal
  • Transverse processes
    • Shorter
    • Transverse foramen for vertebral artery
  • Spinous processes of C2 to C6 often bifid
  • 1st and 2nd cervical vertebrae are unique
    • Atlas & axis
typical cervical vertebra
Typical Cervical Vertebra

Spinous process (bifid)

Lamina

Inferior articular process

Vertebral foramen

Superior articular process

Transverse foramen

Pedicle

Body

Transverse process

atlas c1
Atlas (C1)

Posterior tubercle

Tubercle for transverse ligament

Vertebral foramen

Superior articular facet

Transverse process

Transverse

foramen

Facet for dens

  • Atlas- ring of bone, superior facets for occipital condyles.
    • Nodding movement signifies “yes”.

Anterior tubercle

slide7

Axis (C2)

Spinous process

Lamina

Vertebral foramen

Transverse process

Transverse foramen

Superior articular facet

Odontoid process (dens)

  • Axis- dens or odontoid process is body of atlas.
    • Pivotal movement signifies “no”.
thoracic vertebrae t1 t12
Thoracic Vertebrae(T1-T12)
  • Larger and stronger bodies
  • Longer transverse & spinous processes
  • Demifacets on body for head of rib
  • Facets on transverse processes (T1-T10) for tubercle of rib
thoracic vertebra cranial view
Thoracic Vertebra- cranial view

Spinous process

Transverse process

Facet for tubercle of rib

Lamina

Superior articular process

Vertebral foramen

Pedicle

Superior demifacet for

head of rib

Body

thoracic vertebra lateral view
Thoracic Vertebra- lateral view

Superior notch

Superior demifacet

for head of rib

Superior articular process

Facet for tubercle of rib

Body

Spinous process

Inferior demifacet for head of rib

Inferior articular process

Inferior notch

lumbar vertebrae
Lumbar Vertebrae
  • Strongest & largest
  • Short thick spinous & transverse processes
typical lumbar vertebra cranial view
Typical Lumbar Vertebra- cranial view

Spinous process

Superior articular process

Lamina

Transverse process

Vertebral foramen

Pedicle

Body

slide13

Typical Lumbar Vertebra- lateral view

Superior articular process

Superior notch

Transverse process

Body

Spinous process

Inferior notch

Inferior articular process

Pedicle

sacrum ventral view
Sacrum- ventral view

Superior articular process

Lateral mass

Body

Promontory

Anterior sacral foramen

Apex of sacrum

Coccyx

sacrum dorsal view
Sacrum- dorsal view

Superior articular facet

Neural canal

Lateral mass

Articular surface

Posterior sacral foramen

Lateral sacral crest

Intermediate sacral

crest

Median sacral crest

Hiatus

Coccyx

thorax
Thorax
  • Bony cage flattened from front to back
  • Sternum (breastbone)
  • Ribs
    • 1-7 are true ribs (vertebrosternal)
    • 8-12 are false ribs (vertebrochondral)
    • 11-12 are floating
  • Costal cartilage
sternum
Sternum

Jugular notch

Clavicular notch

First

Manubrium

Second

Costal facets

Third

Body

Fourth

Fifth

Sixth

Seventh

Xiphoid process

slide19
Ribs

Fracture at site of greatest curvature.

  • Increase in length from ribs 1-7, thereafter decreasing
  • Head and tubercle articulate with facets
  • Body with costal groove containing nerve & blood vessels
  • Intercostal spaces contain intercostal muscles
slide20
Rib

Cranial border

Articular facet for a

transverse process

Head

Articular facets for bodies

of vertebrae

Tubercle

Body

Neck

Angle

Costal groove

Ventral extremity

Caudal border

rib articulation
Rib Articulation
  • Tubercle articulates with transverse process
  • Head articulates with vertebral bodies
intervertebral discs
Intervertebral Discs
  • Positioned between adjacent vertebrae
  • Absorb vertical shock
  • Permit movements of the vertebral column
  • Fibrocartilagenous ring with a pulpy center
herniated slipped disc
Herniated (Slipped) Disc
  • Protrusion of the nucleus pulposus
  • Most commonly in lumbar region
  • Pressure on spinal nerves causes pain
  • Surgical removal of disc after laminectomy