regional anatomy Flashcards
What are the two major type of joints between vertebrae?
symphyses and synovial
Where are symphyses in the back located?
between vertebral bodies
Fig 2.31
where are synovial joints in the back located?
between articular processes
Fig 2.32
how many synovial and symphyses joints doe a typical vertebra have
6 total
4 synovial
2 symphyses
what movements are made by the vertebral column?
flexion, extension, lateral flexion, rotation and circumduction.
How are symphysis formed, layer and whats in between?
hyaline cartilage layer
intervertrebral disc
What does the intervertrebral disc consits of?
outer anulus fibrosus
an nucleus pulposus
anulus fibrosus;name outerring and what does it surround?
collagen surrounds fibrocartilage
How is the arrangement of the fibrocartilage in a intervertebral disc callled? and whats is its effect?
lamellar
limits rotation between vertebrae
what is the nucleus pulposus? and effect
gelatinous
absorbs compression forces
What can degenerative changes in the anulus fibrosus cause? and what can that cause?
(posterolateral) herniation
impinge roots of a spinal nerve in the intervertrebral foramen
how is the synovial joint between superior and inferior articular processes on adjacent vertebrae called?
zygapophysial joint
what and where is a zygapophysial joint ?
joint between arches, between superior and inferior articular processes,
how does a zygapohysial joint slope in cervical region? and what movements can it make there
slope inferiorly from anterior to posterior,
flexion and extension
how does a zygapohysial joint orientate in thoracic regions? and what movements?
vertically
limits flexion and extension, but facilitates rotation.