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56 Cards in this Set
- Front
- Back
The appendicular skeleton includes what?
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Upper extremeity and pectoral girdle (clavicle and scapula) and the lower extremity and its pelvic girdle (ilium, pubis, and ischium)
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What does the axial skeleton include?
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The skull, mandible, hyoid bone, vertebral column including the sacrum and coccyx, ribs and sternum
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How many vertebrae does the cervical region have?
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7
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How many vertebrae are in the thoracic region?
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12
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How many vertebrae are found in the lumbar?
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5 (6 if you have a congenital defect)
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The sacrum is fused from the fusion of how many vertebrae?
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5
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Fusion begins at what age and is completed at what age?
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Begins at 16-18 years of age and is completed by the mid-20s
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Coccyx is formed from the fusion of how many vertebrae?
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3-5
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What age is fusion completed?
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age 30
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The primary curve exists in what?
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utero
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The primary curve is concave where?
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anteriorly
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What kind of curve is the cervical curve?
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secondary and is normally seen at 3 months of age. It is convex anteriorly and develops from holding the head upright
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Lumbar curve is what?
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secondary
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What age is the lumbar curve typically seen at?
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6 months of age from sitting up and becomes more pronounced due to bipedal locomotion
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The development of the various curves of the spine are due to what?
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Due to the differences in the anterior and posterior depths of the vertebral bodies and the intervertebral discs
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Kyphosis affects what region of the spine?
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Thoracic
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What does kyphosis present as?
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An increased posterior convexity (hunchback appearance)-particularly seen in women who have osteoporosis
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Lordosis affects what region of the spine?
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The Lumbar region
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How does Lordosis present?
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As an increased anterior convexity (sway back)-more frequent in women during third trimester pregnancy-condition is reversible after pregnancy
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How many lateral curves does Scoliosis present with?
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2 lateral curves
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What scoliotic curve is primary?
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The curve in the thoracolumbar region
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The secondary scoliosis curve develops in what region and is the resultant of what?
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The secondary curve develops in the thoracocervical region as a compensatory curve. The secondary curve maintains the skull over the vertical axis of the body. A rotational deformity results that is visible in the thoracic rib cage
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Scoliosis is more commonly seen in whom?
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Teenage girls
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There are two types of ligaments in the vertebral column, name them
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Ligaments that are between vertebral bodies and ligaments that are between vertebral arches
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Ligaments that are between vertebral bodies include?
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Intervertebral discs, anterior longitudinal ligament, posterior longitudinal ligament
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Ligaments between the vertebral arches include?
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Supraspinous ligaments, Interspinous ligaments, Ligamentum Flavum, intertransverse ligaments
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How many toxins are found in cigarettes?
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4,000 and 70 are known carcinogens
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Intervertebral discs are composed of what?
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A gelatinous core (nucleus pulposis) and a fibrous ring (annulus fibrosis). Its shape and size is defined by the vertebral bodies and the curvature of the spine
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What is a HNP (herniated nucleus pulposis)?
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It's where the nucleus pulposis spills out and impinges the nerve network of collegen fibers.
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The collegen fibers of the annulus fibrosis have the tensile strength of what?
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Steel
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Describe the orientation of the fibers of the annulus fibrosis?
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Orientation of fibers are at oblique, transverse and have concentric layers that overlap and reinforce each other. This design gives maximum protection from disc dislocation and maintains physical integrity
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Describe the anterior longitudinal ligament?
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Is broad and flat, is located on the front side of vertebrae and intervertebral discs. This ligament is quite strong and is found along the entire length of the vertebral column
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Describe the posterior longitudinal ligament
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is narrow and flat and is located on the posterior side of the vertebral bodies and the intervertebral discs. It is contained within the vertebral canal and is found along the entire length of the vertebral column
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Describe the supraspinous ligament
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is a continuous structure attached to the tips of the spinous processes along the entire length of the vertebral column. It is enlarged in the cervical region and known as the ligamentum nuchae
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Describe the interspinous ligaments
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they are interposed between adjacent spinous processes
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Describe the ligamentum Flavum
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Is a yellow colored ligament that is interposed between adjacent laminae. They are yellow because they are elastic fibers. They must be elastic in order not to compress the spinal cord when a person moves the back
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Describe the intertransverse ligaments
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These ligaments are interposed between adjacent transverse processes
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Where do we usually see disruption of the intervertebral discs?
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Posterolateral side of the lumbar or cervical discs
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What is dynamic spinal stenosis?
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It's caused when someone moves the spine and causes a narrowing and impingment of the spinal cord because the ligamentum flavum is deterrioting
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What is a zygopophyseal joint?
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A joint that connects one joint to another in the spine and is synovial
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What are the basic movements of the spine?
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flexion, extension, lateral flexion, and rotation
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The movements of the spine are made possible due to what?
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compression and distortion of the intervertebral discs
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What limits the movements of the spine?
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by the orientation of the joints between the vertebral arches
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What movements are in the cervical spine?
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Flexion, extension, lateral flexion and rotation between C1 and C2
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What movements are in the thoracic spine?
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flexion, extension, and lateral flexion. free rotation is possible due to the alignment of the articular processes on an arc about the axis of rotation
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What movements are possible in regards to the lumbar spine?
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Flexion, extension, and lateral flexion; however rotation is limited by inwardly facing articular processes
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The first cervical vertebrae is known as what?
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The atlas
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The second cervical vertebrae is known as what?
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The axis
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What are some unique features of the atlas?
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Absense of a body, spinous process and pedicles;
Anterior arch with an anterior tubercle on the anterior surface and an articular facet on the posterior side; lateral masses from which project the transverse processes |
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What structures pass through the intervertebral foramen?
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spinal nerves, extension of dura mater, segmental artery, intervertebral veins
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the dens is aka?
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the ondontoid process
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The spinous process on the axis is what?
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bifid (seperated into 2 parts)
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What is unique about C3?
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It has both anterior and posterior tubercles on either side of the transverse foramen; spinous process is bifid (C3-C6)
Spinous process of C7 is prominent, downward sloping and is not bifid |
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What is contained in the sacral canal?
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Cauda equina, dura mater, and arachnoid membrane
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What exit from the anterior sacral foramina?
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Ventral primary rami
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What exits from the posterior sacral foramina?
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dorsal primary rami
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