Principles of Anatomy and Physiology
15th Edition
ISBN: 9781119329398
Author: Gerard J Tortora, Bryan Derrickson
Publisher: John Wiley & Sons Inc
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Chapter 13, Problem 3CP
Summary Introduction
To review:
The definitions of conus medullaris, filum terminale, cauda equine, and spinal segment. Also, the partial division of spinal cord into right and left sides.
Introduction:
The spinal cord is basically the backbone of the vertebrates, which is somewhat oval in shape and is slightly flat posteriorly and anteriorly. In human adults, it runs from the inferior region of the brain to the medulla oblongata, and toward the superior boundary of the second lumbar vertebra.
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Define conus medullaris, filum terminale, and cauda equina.What is a spinal segment? How is the spinal cord partiallydivided into right and left sides?
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Principles of Anatomy and Physiology
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- Which of the following is NOT true in adults? (A) The tapering end of the spinal cord may terminate as high as T12 or as low as L3. (B) The first cervical nerves lack dorsal roots in 50% of people. (C) The coccygeal nerve may be absent. (D) The terminal filum is the vestigial rem- nant of the caudal part of the spinal cord that was in the tail of the embryo. (E) The spinal cord has a lumbar enlargement for the lower limb but no equivalent enlargement for the smaller upper limb.arrow_forwardDan "threw out his back" after lifting heavy furniture and complained of pain radiating down the back of his right leg. Use anatomical terminology to describe the body regions where the injury occurred and where Dan experienced pain. Which imaging technique would you prescribe to diagnose a spinal problem? Explain your choice.arrow_forwardSketch a cross section of the spinal cord showing the anterior and posterior horns. Where are the gray and white matter? Where are the columns and tracts?arrow_forward
- How many spinal nerves are there in a body?arrow_forwardWhy doesn’t the spinal dura mater have two layers as thecranial dura mater does? What structures that are formed fromcranial dura mater must be missing around the spinal cord?arrow_forwardFrom a scientific journal article answer the following questions: Describe the functional anatomy of the spinal cord including: white matter, grey matter, tracts, roots, and spinal nerves. Where along the vertebral column is a needle inserted for a lumbar puncture? Which landmark can you use to find this level? PLEASE provide citations in APA style.arrow_forward
- Describe the distal (inferior) end of the spinal cord and the contents of the vertebral canal from level L2 through S5?arrow_forwardWhich statement is true regarding the spinal cord? a) The interior horns of the spinal cord receive information from the body b) The spinal cord is surrounded by the Dura matter only c) The spinal cord terminates into the upper thoracic region d) The lower lumbar region doesn't contain a spinal cord but rather a collection of nerve roots called the cauda equinaarrow_forwardSketch the spinal cord in cross section, and label the following structures: (a) lateral funiculus of white matter, (b) ventral root, (c) ventral horn of gray matter, (d) central canal, (e) dorsal root ganglion, (f) dorsal column tracts: fasciculus gracilis and fasciculus cuneatus, (g) ventral corticospinal tract, (h) lateral corticospinal tract.arrow_forward
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