Spinal Cord Workbook. Learning objec&ves
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1 Spinal Cord Workbook Direc&ons. Watch the following video tutorials and complete this workbook: YouTubeèTheNotedAnatomistèPlaylistsèSpinal cord and nervesèwatch videos with the names of ObjecCves A-E. Learning objec&ves A. Spinal cord-meninges Describe the seat belt analogy for the meninges (what is the Car? Seatbelt? Passenger?) IdenCfy the following 3 meninges surrounding the spinal cord: Dura mater. What is the relaconship between dura and epineurium? Arachnoid mater. What is the space deep to the arachnoid mater called? What does it contain? Pia mater. What are the funccons of the dentate ligaments and filum terminale? Describe the region of the vertebral canal inferior to the conus medularis. B. Spinal cord-topography Describe the topography of the spinal cord. Why does the spinal cord terminate at the L1-L2 vertebral level? What fills the space below the conus medullaris? Describe the measurements of the spinal cord. How long, wide and heavy is the spinal cord? C. Spinal cord-segmenta&on Describe the segmental organizacon of the spinal cord. How many cervical, thoracic, lumbar and sacral spinal cord segments are there? How does the terminacon of the spinal cord at L1-L2 vertebral level affect its segmental organizacon? Describe vertebrosegmental discrepancy. Why is the spinal cord not always opposite its corresponding vertebra? D. Spinal cord-gray macer Describe spinal cord gray mauer. Why is gray mauer gray? What are the 3 horns? What type of neurons do they contain? Describe the cervical and lumbar enlargements. What causes the spinal cord to swell in the cervical and lumbar vertebral regions? E. Spinal cord-white macer Describe spinal cord white mauer. What is the funccon of spinal cord white mauer? What is a tract/ funiculus? What are the primary white mauer tracts in the spinal cord? How do you idencfy a seccon of spinal cord as being cervical, thoracic, lumbar, or sacral? David A. Morton, Ph.D. Department of Neurobiology and Anatomy 1
2 A. Spinal cord Meninges What does the car analogy have to do with meninges? What do the car, seatbelt and passenger represent? Label the following images using these terms: Vertebrae Dura mater. What is the relaconship between dura mater and epineurium? Arachnoid mater. What is the space deep to the arachnoid mater called? What does it contain? Pia mater. What are the funccons of the dentate ligaments and filum terminale? Spinal cord 2
3 B. Spinal cord Topography What is the relaconship between dura mater and spinal cord? What is the conus medullaris? What fills the space below the conus medullaris? Where in the vertebral column does the spinal cord end? Why is there a vertebrosegmental discrepancy between the spinal cord and vertebral column? What are the dimensions of the spinal cord? 3
4 C. Spinal cord - Segmenta&on Fill in the chart with the segmental levels for each of the following: # Vertebral levels # Spinal cord levels # Spinal nerve levels Cervical Thoracic Lumbar Sacral Why are there 7 cervical vertebral levels BUT 8 cervical spinal cord/nerve levels? 4
5 C. Spinal cord - Segmenta&on Describe the vertebrosegmental discrepancies in the following regions: Cervical Thoracic 5
6 C. Spinal cord - Segmenta&on Describe the vertebrosegmental discrepancies in the following regions: Lumbar Sacral 6
7 D. Spinal cord Gray macer Why is it called gray mauer? Describe the funccon for each of the following regions of gray mauer: Ventral horn Lateral horn Dorsal horn What types of neurons are found in each? 7
8 D. Spinal cord Gray macer Why does the spinal cord swell in the cervical and lumbar vertebral regions? How is Gray mauer like lollipops? (what is the lolli head? Stem?) What muscles do the C, T, L and S ventral horns primarily innervate? 8
9 E. Spinal cord White macer Why is it called white mauer? What is the funccon of spinal cord white mauer? What is a tract? 9
10 E. Spinal cord White macer What is a tract? What informacon is in ascending tracts? Where does it go? What informacon is in descending tracts? Where does it come from? Where does it go? Does cervical spinal cord have more or less white mauer than sacral cord? Why or why not? Why does the amount of white mauer change depending on the segmental level? 10
11 E. Spinal cord White macer What are the primary tracts of white mauer? 11
12 E. Spinal cord White macer How do you discnguish between the following spinal cord levels in x-seccon? Cervical Thoracic Lumbar Sacral 12
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