The spine Flashcards
The vertebral column is not straight, which better supports the _____________ of the body
Weight
What are the four spinal curvature?
- Cervical
- Thoracic
- Lumbar
- Sacral
__________ are present at birth
Primary curves (Thoracic and sacral curves)
_____________ appear after birth when the child learns to walk and help the legs carry the body
Secondary curves (Cervical and lumbar curves)
Body
Anterior structure that bears the weight of the vertebrae
Vertebral arch
Posterior structure to the body
Vertebral foramen
Opening formed by connection of body and vertebral arch
Vertebral canal
Formed by vertebral foramen from multiple, stacked vertebrae
Intervertebral foramina
Opening in between adjacent vertebrae
Pedicles
Two extensions that form vertebral arch
Laminae
Two extensions from the pedicle that form the vertebral arch
Spinous process
Projection from laminae
Transverse process
Lateral projections from vertebral arch
Superior and inferior articular process
Extend from junction of pedicles and laminae
Articular facet
Smooth surface on articular process
Intervertebral disc
Pad of fibrocartilage that separates adjacent vertebrae
Annulus fibrosus
Outer ring of fibrocartilage of the intervertebral discs
Nucleus pulposus
Inner ring of the intervertebral dis
What are the five regions that the spine is divided into?
- Cerival Vertebrae
- Thoracic Vertebrae
- Lumbar Vertebrae
- Sacrum (Sacral Vertebrae)
- Cocyx (Tailbone)
Cervical vertebrae are a group of 7 vertebrae (C1-C7) that support the __________
Head & Neck
_____________ are openings that houses the vertebral artery and vein
Transverse foramina
Transverse foramina is only found in the ___________ vertebrae
Cervical vertebrae
_______ joins with the skull and spine with atlanto-occipital joint
Atlas (C1)
Feature of the Atlas (C1) (Prt of the cervical vertebrae)
- Lacks a body and spinous process, has articular facets for dens
- Contain depressed, oval superior and inferior articular facets that articulate with the occipital condyles
Axis (C2) will ______ with atlas (alantoaxial joint) (Part of the cervical vertebrae)
Fuse
Feature of Axis C2 (Part of the cervical vertebrae)
- Dens - Pivot for rotational movement of the skull
- Facets - Form joint with occipital condyles
_____________ transitions from cervical vertebra to thoracic vertebrae
Vertebra Prominens (C7)
The thoracic vertebrae (T1 - T12) are a group of 12 vertebrae, and each forms a joint with a _____
Rib
Features of the Thoracic vertebrae
- Distinguished by costal facets (costal demifacets), projections that form joints with ribs
- Increase in size as they move from cervical towards lumbar vertebra