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56 Cards in this Set

  • Front
  • Back
The appendicular skeleton includes what?
Upper extremeity and pectoral girdle (clavicle and scapula) and the lower extremity and its pelvic girdle (ilium, pubis, and ischium)
What does the axial skeleton include?
The skull, mandible, hyoid bone, vertebral column including the sacrum and coccyx, ribs and sternum
How many vertebrae does the cervical region have?
7
How many vertebrae are in the thoracic region?
12
How many vertebrae are found in the lumbar?
5 (6 if you have a congenital defect)
The sacrum is fused from the fusion of how many vertebrae?
5
Fusion begins at what age and is completed at what age?
Begins at 16-18 years of age and is completed by the mid-20s
Coccyx is formed from the fusion of how many vertebrae?
3-5
What age is fusion completed?
age 30
The primary curve exists in what?
utero
The primary curve is concave where?
anteriorly
What kind of curve is the cervical curve?
secondary and is normally seen at 3 months of age. It is convex anteriorly and develops from holding the head upright
Lumbar curve is what?
secondary
What age is the lumbar curve typically seen at?
6 months of age from sitting up and becomes more pronounced due to bipedal locomotion
The development of the various curves of the spine are due to what?
Due to the differences in the anterior and posterior depths of the vertebral bodies and the intervertebral discs
Kyphosis affects what region of the spine?
Thoracic
What does kyphosis present as?
An increased posterior convexity (hunchback appearance)-particularly seen in women who have osteoporosis
Lordosis affects what region of the spine?
The Lumbar region
How does Lordosis present?
As an increased anterior convexity (sway back)-more frequent in women during third trimester pregnancy-condition is reversible after pregnancy
How many lateral curves does Scoliosis present with?
2 lateral curves
What scoliotic curve is primary?
The curve in the thoracolumbar region
The secondary scoliosis curve develops in what region and is the resultant of what?
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
Scoliosis is more commonly seen in whom?
Teenage girls
There are two types of ligaments in the vertebral column, name them
Ligaments that are between vertebral bodies and ligaments that are between vertebral arches
Ligaments that are between vertebral bodies include?
Intervertebral discs, anterior longitudinal ligament, posterior longitudinal ligament
Ligaments between the vertebral arches include?
Supraspinous ligaments, Interspinous ligaments, Ligamentum Flavum, intertransverse ligaments
How many toxins are found in cigarettes?
4,000 and 70 are known carcinogens
Intervertebral discs are composed of what?
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
What is a HNP (herniated nucleus pulposis)?
It's where the nucleus pulposis spills out and impinges the nerve network of collegen fibers.
The collegen fibers of the annulus fibrosis have the tensile strength of what?
Steel
Describe the orientation of the fibers of the annulus fibrosis?
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
Describe the anterior longitudinal ligament?
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
Describe the posterior longitudinal ligament
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
Describe the supraspinous ligament
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
Describe the interspinous ligaments
they are interposed between adjacent spinous processes
Describe the ligamentum Flavum
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
Describe the intertransverse ligaments
These ligaments are interposed between adjacent transverse processes
Where do we usually see disruption of the intervertebral discs?
Posterolateral side of the lumbar or cervical discs
What is dynamic spinal stenosis?
It's caused when someone moves the spine and causes a narrowing and impingment of the spinal cord because the ligamentum flavum is deterrioting
What is a zygopophyseal joint?
A joint that connects one joint to another in the spine and is synovial
What are the basic movements of the spine?
flexion, extension, lateral flexion, and rotation
The movements of the spine are made possible due to what?
compression and distortion of the intervertebral discs
What limits the movements of the spine?
by the orientation of the joints between the vertebral arches
What movements are in the cervical spine?
Flexion, extension, lateral flexion and rotation between C1 and C2
What movements are in the thoracic spine?
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
What movements are possible in regards to the lumbar spine?
Flexion, extension, and lateral flexion; however rotation is limited by inwardly facing articular processes
The first cervical vertebrae is known as what?
The atlas
The second cervical vertebrae is known as what?
The axis
What are some unique features of the atlas?
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
What structures pass through the intervertebral foramen?
spinal nerves, extension of dura mater, segmental artery, intervertebral veins
the dens is aka?
the ondontoid process
The spinous process on the axis is what?
bifid (seperated into 2 parts)
What is unique about C3?
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
What is contained in the sacral canal?
Cauda equina, dura mater, and arachnoid membrane
What exit from the anterior sacral foramina?
Ventral primary rami
What exits from the posterior sacral foramina?
dorsal primary rami