Prevertebral Region Flashcards
How can Longus Colli be divided?
Into a superior oblique, inferior oblique, and vertical parts
-looks somewhat like a diamond over the bodies of the vertebrae
What muscle opposes the action of Longus colli
Longissimus Cervicis
What muscle of the Prevertebral Region is homologous to Posterior Intertransversarii muscles
Rectus Capitus Lateralis
—b/c lateral flexion at AP joint is not a thing, therefore really R.C. Lateralis action is lateral support
Infections within Prevertebral fascia can reach thoracic cavity by way of what?
Superior thoracic aperture
What are foramen transversarium for?
Passage of the Vertebral Artery
What is unique to Cervical Vertebrae in this region?
Bifid spinous processes
What is another name for C7
vertebra prominens
What is C1 lacking?
A body, it only has an anterior arch
What does C2 uniquely have?
Odontoid process (dens) --developmentally formed by the body of C1
What type of joint is the AO?
Condylar synovial joint, primarily allowing for flexion and extension
What fixes the atlas to the base of the skull?
Anterior & Posterior atlanto-occipital membranes
—come off outside surfaces of Ant. & Post. arches of C1 & attach to foramen magnum
What is the tectorial membrane
A continuation of the posterior longitudinal ligament & attaches to the foramen magnum
What fixes the AA joint?
Series of ligaments that are attached to the dens
What ligament encompasses the dens?
Transverse Ligament of the atlas
What structure runs Longitudinally across the transverse ligament?
Superior and inferior branches of the cruciform ligament
- –superior extends up the occipital bone
- –inferior is attached to the base of the dnes