Anatomy Flashcards
How many coccyx segments does a child have
4
Total vertebrae of adult and child
26 and 33
Where does the spinal cord end
L1
Which are the primary curvatures and what shape?
Thoracic and sacral
Convex
Which are the secondary curvatures
Cervical and lumbar
Concave
Kyphosis is AKA
Dowager’s hump
Humpback
Describe kyphosis
Exaggerated thoracic curvature
Increased convexity
Osteoporosis may lead to this
Describe lordosis
Exaggerated lumbar cure
Increased concavity
Sometimes during prego
Scoliosis describe
Abnormal lateral curvature
Compensatory curve
How many sacral segments does a child have?
5
Dextroscoliosis
The spine curves to the right (usually thoracic), followed by a curve to the left, below it. Forming an S.
Levoscoliosis
A curve to the left, usually in the lumbar spine.
Parts of the intervertebral disc
Annulus fibrosis (donut) Nucleus pulposus (jelly)
Zygopophyseal joints are
Facet joints
Synovial joints
The purpose of zygapophyseal joints
Link vertebrae together
Allow flexion, extension, and twisting
How many zygapophyseal joints on each vertebrae and their location
Each vertebra has 2 sets of these joints
1 pair faces up - superior articular process, facet
and 1 pair faces down- inferior articular process, facet
On right and left side
Located posteriorly
Articular Pillar
The columnar structure created by the superior and inferior articular processes of the cervical vertebrae
Intervertebral Foramina
Formed by inferior and superior vertebral notches
Spaces between adjacent vertebrae which gives passage for spinal nerves.
Typical cervical vertebrae has (12)
Body Pedicles 2 transverse formina Vertebral formina Bifid tip on spinous processes Lamina Vertebral arch Transverse processes Sup/inf articular processes Vertebral Foramina Zygapophyseal joint Articular pillar
What 4 things are unique to c1 atlas
Has no body
Very short spinous process
Transverse Atlantal ligament that stabilizes the atlantoaxial joint
Anterior and posterior arch
Superior facets that articulate with occipital condyles
Transverse processes are longer than the other cervical vertebrae
3 unique features of thoracic vertebra
Rib articulations
Sharp, caudally (down)-pointing spinous processes
Articular facets/Demi-facets on transverse and vertebral bodies
Features of T1-4
Resembles cervical vertebrae
Short spinous processes
Shorter vertebral bodies
2 features of T5-8
Typical thoracic vertebrae
Transverse processes articulate with ribs
3 features of T9-12
Resemble lumbar vertebrae
Not long and pointy spinous processes
Larger bodies