Remember that the anatomical position is the neutral starting point For a list

Remember that the anatomical position is the neutral

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Remember that the anatomical position is the “neutral” starting point. For a list of general movements, see Pre-Lab Exercise 2.6. 65 © 2011 Shirley J. Wright, Ph.D.
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List movements of the vertebral column: A functional spinal unit (FSU) is the smallest segment of the spine that exhibits biomechanical characteristics similar to the entire spine. The FSU is composed of two adjacent vertebrae and the intervertebral disc between them as well as adjoining ligaments, but excludes the nearby muscles. Assemble two adjacent thoracic vertebrae as shown in the figure of a thoracic FSU from Primal Pictures . Identify the following: - Inferior articular facet - Intervertebral foramen - Spinous process - Superior articular facet - Transverse process - Vertebral canal - Zygopophyseal joint Check your answers by referring to the image of the FSU provided at your lab table. Leaving room for an intervertebral disc between the two vertebrae, test the range of movements possible for the FSU. Refer to figure shown here of a thoracic FSU. The center of each intervertebral disc contains a pulpy, semifluid nucleus pulposus which serves as a shock absorber becoming broader when compressed and narrower when stretched (such as when suspended from a swing). The nucleus pulposus acts as a semifluid fulcrum enabling vertebral column movements. LABORATORY EXERCISE 4.4 Ligaments of Vertebral Column 66 © 2011 Shirley J. Wright, Ph.D.
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Ligaments join the vertebrae of the vertebral column and reinforce the joints. Some ligaments also function to limit movement at the joints. For example, the anterior longitudinal ligament is strong enough to limit extension of the vertebral column. Use the articulated skeletons, vertebrae models and disarticulated skeleton to identify the location of the following ligaments. Check your answers in Primal Pictures . Table. 4.2. Major Ligaments of the Vertebral Column. Name of Ligament Location of Ligament Anterior longitudinal ligament Posterior longitudinal ligament Ligamentum Flava Supraspinous ligament Ligamentum nuchae Interspinous ligaments LABORATORY EXERCISE 4.5 Spinal Nerves 67 © 2011 Shirley J. Wright, Ph.D.
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This laboratory exercise allows you to determine the relationship of the spinal nerves to the vertebrae. Examine anatomical models of the cervical spine, thoracic spine and lumbar spine. Be able to identify each spinal nerve as well as each individual vertebra. Also examine the articulated skeleton to determine the location at which the spinal nerves exit the vertebral column. Note that the spinal nerves are paired. Cervical Spine : Note that there are 8 pairs of cervical spinal nerves and 7 cervical vertebrae. How are they arranged? In particular, where are the first and eighth cervical nerves located? Where are they on the anatomical model of the cervical spine?
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  • Spring '11
  • Masthay
  • Vertebra, Bones of the torso

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