Arthrology of Vertberal Column: Nine Common Ligaments/Intervertebral Disc Intro/ Nucleus Pulposus Flashcards
What is the maximum number of common ligaments identified in a vertebral couple?
eight
What is the reason that nine common ligaments are identified but only eight will be attachedat any specific vertebral couple?
the ligamentum nuchae and supraspinous ligaments attach to the spinous tubercles, but only one of these will be indenitifed at a single vertebral couple
Which common ligaments will attach to the vertebral body?
the anterior longitudinal ligament, intervertebral disc and posterior longitudinal ligament
What common ligament/s will attach to the vertebral arch?
the ligamentum flavum
Whast is the number of true intervertebral discs identified in the adult?
twenty three
In the adult, which vertebral levels will demonstrate a true intervertebral disc?
those between C2 and S1 inclusive
What is the intervertebral disc histologically composed of?
cells, collagen fibers, and a hydrated proteoglycan gel
What is the cervical nucleus pulposus composed of?
fibrocartilage
What is the water concentration in the lumbar nucleus pulposus at birth and after thirty?
birth…88%; thrity…70%
What is the consequence of non-aggregated glycosaminoglycans in the lumbar nucleus pulposus?
the nucleus pulposus will loose water under deformation conditions
What cell is associated with the nucleus pulposus until about age eleven?
notochord cells
What cells are associated with the mature nucleus pulposus?
reticulocyte-fibroblast and chondroblast
Which type of collagen is dominant in the nucleus pulposus?
collage type II
What general tissue location is described as having an abundance of collage type II fibers?
cartilage
What is the role of collagen fiber type II fibers based on locations where is it dominant?
it apperas to be related to tissues having a deformation - reformation ability
