deep back and suboccipital triangle Flashcards
the vertebral foramen encloses …
the spinal cord
(green = anterior)
(blue = posterior)
intervertebral foramina allow passage of …
spinal nerves and blood vessels
intervertebral discs have two main components:
nucleus pulposus
annulus fibrosus
function of intervertebral discs
provide articulations that are strong enough to bear weight of body, but flexible enough to permit movement on multiple axes
herniated disc is …
when a portion of the nucleus pulposus pushes through the annulus fibrosus
a demifacet is
half of a facet
ex. most thoracic vertebrae have two pairs of demifacets
thoracic vertebrae are specialized to …
articulate with mobile ribs
kyphosis
(kyphotic) an anteriorly concave curve
-in thoracic spine and sacrum
2 types of spinal curvatures in average adult
kyphosis
lordosis
lordosis
(lordotic) an anteriorly convex curve
-in cervical and lumbar region
all deep back muscles are innervated by …
dorsal rami
all suboccipital region muscles are innervated by … and act to …
the suboccipital nerve
extend and rotate head
superior border of suboccipital triangle
rectus capitis posterior major
lateral border of suboccipital triangle
obliquus capitis superior
inferior border of suboccipital triangle
obliquus capitis inferior
