Question | Answer |
how is the spinal canal formed | by openings in vertebrae when stacked upon each other |
where does the spinal canal begins and ends at | begins at the base of the skull & extends distally to the sacrum. |
what contains the cerebrospinal fluid | the spinal canal |
where does the spinal cord begins & ends at | begins at the medulla oblongata,passes through the foramen magnum & ends at the lower border of the 1 lumbar vertebrae. |
where is the most common place for a lumbar puncture | L3-L4 |
how many vertebrae are in cervical,thoracic,lumbar,sacrum & coccyx | 7cervical,12thoracic,5lumbar,1sacrum,1coccyx |
the sacrum is fused from 5 into how many | 1 sacrum |
the coccyx is fused from 3 to 5 into how many | 1 coccyx |
the cervical & lumbar regions have concave curves and are called | lordotic |
the thoracic & sacral regions have what kind of curves | convex curves |
when does the thoracic & sacral curves develop | soon after birth |
what are the primary or posterior curves | the thoracic & sacral curves |
which two portions of the vertebral column are classified as 2nd or compensatory curves | cervical & lumbar |
when is the first compensatory curve formed | formed in the cervical region when a child begins to hold up his head |
when is the 2nd compensatory curve formed | formed in the lumbar region when a child first learns to walk |
what is the body of the vertebrae | is the thick weight bearing part of the vertebrae |
the vertebral arch extends where | extends posteriorly from the body |
what are the intervertebral joints | the slightly moveable joints b/w the vertebral bodies |
the posterior body & arch form an opening called | the vertebral foramen |
what protects the spinal cord | the spinal canal |
how is the vertebral canal formed | when vertebra are stacked |
the pedicles extend how | posteriorly from each side of the vertebral body |
the pedicles extend posteriorly from each side of the vertebral to form what | they form most of the sides of the vertebral arch |
the posterior portion of the vertebral arch is formed by the | laminae |
the transverse process extends laterally from where | the junction of the pedicles & laminae |
the spinous process extends posteriorly from--- | union of the two lamina |
the zyagopophseal joints are form by the | sap(superior articulating process) & iap (inferior articulating process facets are actual articulating surfaces |
on each vertebrae there is a | superior vertebral notch and inferior vertebral notch located above & below each pedicle forming the intervertebral foramina(l&R) |
fibrocartilaginous disks are located b/w each vertebrae except | C-1 & C-2 |
each disk contains an outer fiberous portion called and the inner portion is called | annules fibrosis,nucleus pulposus |
C-3 & C-6 have what kind of characteristics | all the same characteristics |
what are the 3 unique features(characteristics) of cervical vertebrae | bifid tip,transverse foramen,overlapping bodies |
the chunks of bone b/w the superior & inferior articular processes are called | articular pillars |
the term lateral mass is used when describing the pillar for what | C-1 |
C-7 vertebrae prominens has many features of the | thoracic vertebrae |
the transverse atlantal ligament holds the | dens or odontoid process in place |
C-1 has no what | no body |
what forms the atlantoocciptal joints | the superior articulating processes of C-1 have a large depressed surfaces for articulation with the occiptal condyles of the skull |
Axis or C-2 contains what | contains the dens or odontoid process |
what is the function of the dens | acts as a pivot for the rotation of the head |
zygapopyseal joints b/w atlas & axis are only seen on a what | true AP projection |
the intervertebral foramina are located at what | 45 degrees angle to the MSP |
what are the normal thoracic vertebrae | T5,T6,T7,T8 |
T1-T4 have what characteristic | characteristic of cervical vertebrae |
T9 thur T12 have what kind of characteristics | characteristic of lumbar vertebrae |
what is the unique features of thoracic vertebrae | facets for articulation w ribs.spinous process of thoracic vertebrae extend extremely inferior so the spinous process of T4 will be superimposes on the body of T5 during an AP |
the articulation b/w the transverse processes of the thoracic vertebrae & the tubercle of each rib forms the | costotransverse joint |
11 ribs & 12 ribs do not have costotransverse but articulates at what | costovertebral joints |