Spinal column Flashcards
how many thoracic vertebrae are there?
12
how many lumbar vertebrae are there?
5
how many cervicle vertebrae are there?
7
AO (atlanto-occipital) joint
Condyloid synovial
AA (atlanto-axial) joint
2 plane joints
[1 pivot joint for dens]
What are C2 - C7 and C7-T1 joints?
plane synovial joints
What is the lumbar zygapophyseal joint?
plane type synovial joint
what are the 2 parts of the intervertebral disc?
nucleus and annulus
What is the annulus made up of?
Layers of (laminae) fibrocartilage
Which direction are the fibrous cartilage orientation?
criss crossing to attach to the vertebrae above and below
What is the role of the disc nucleus?
distribute pressure evenly during compression
what is the nucleus made of?
mucoprotein gel
how many sacrum vertebrae are there?
5 fused togehter
how many coccyx vertebrae are there?
3-5 fused together
What are the ligaments of the craniocervical spine?
- Anterior longitudinal ligament
- posterior longitudinal ligament
- ligamentum flavum
- nuchal ligament
- supraspinous ligament
- anterior atlanto-occipital membrane
- posterior atlanto-occipital membrane
- tectorial membrane
what is the primary role os anterior longitudinal ligament?
resist hyper-extension
[tie analogy]
what is the primary role of posterier logintudinal ligament?
prevent hyper-flexion
