Joints/Ligaments of Vertebral Column Flashcards
zygapophysial joint
between superior and inferior articular processes
permit gliding movements
ligamenta flava
joints the laminae of adjacent vertebral arches
resist separation of laminae by stopping abrupt flexion of vertebral column; help preserve posture and assist with straightening the column after flexing
interspinous ligaments
between the surfaces of spinous processes
weak
supraspinous ligaments
runs along the edge of the spinous processes
strong
merges superiorly with the nuchal ligament
nuchal ligament
strong median ligament of the neck
extends from external occipital protuberance and posterior border of the foramen magnum to the spinous processes of the cervical vertebrae
atlanto-occipital joints
between lateral masses of C1 and the occipital condyles
permits nodding of the head
anterior and posterior atlanto-occipital membranes
extend from anterior and posterior arches of C1 to the anterior and posterior margins of the foramen magnum
help prevent excessive movement of these joints
lateral atlanto-axial joints
between lateral masses of C1 and superior facets of C2
permits the “no” movement
medial atlanto-axial joint
between the dens of C2 and the anterior arch and transverse ligament of the atlas
transverse ligament of the atlas
between tubercles on the medial aspects of the lateral masses of the C1 vertebrae
superior longitudinal band
from transverse ligament of the atlas to the occipital bone
along with the inferior longitudinal band and the transverse ligament of the atlas, it forms the cruciate ligament
inferior longitudinal band
from transverse ligament of the atlas to the body of C2
along with the superior longitudinal band and the transverse ligament of the atlas, it forms the cruciate ligament
alar ligament
extend from the sides of the dens to the lateral margins of the foramen magnum
prevent excessive rotation at the joints
tectorial membrane
superior continuation of the posterior longitudinal ligament
runs from body of C2 to the internals surface of the occipital bone
covers the alar ligaments and transverse ligaments of the atlas