NAME ____________________________________ LAB TIME/DATE _______________________
S H E E T
Spinal Cord, Spinal Nerves, and the Autonomic Nervous System
Anatomy of the Spinal Cord
1. Match each anatomical term in the key to the descriptions given below. Key: a. cauda equina 1. 2. 3. 4. b. conus medullaris c. filum terminale d. foramen magnum
most superior boundary of the spinal cord meningeal extension beyond the spinal cord terminus spinal cord terminus collection of spinal nerves traveling in the vertebral canal below the terminus of the spinal cord
2. Match the key letters on the diagram with the following terms. 1. 2. 3. 4. 5. arachnoid mater central canal 7. dorsal (posterior) horn dorsal ramus of spinal nerve dorsal root ganglion o n a
dorsal root of spinal nerve dura mater
11. 12. 13.
spinal nerve ventral (anterior) horn ventral ramus of spinal nerve ventral root of spinal nerve white matter
8. 9. 10.
gray commissure lateral horn pia mater 14. 15.
3. Choose the proper answer from the following key to respond to the descriptions relating to spinal cord anatomy. Key: a. sensory 1. 2. 3. b. motor c. both sensory and motor 4. 5. 6. d. interneurons
neuron type found in dorsal horn neuron type found in ventral horn neuron type in dorsal root ganglion
fiber type in ventral root fiber type in dorsal root fiber type in spinal nerve
4. Where in the vertebral column is a lumbar puncture generally done? Why is this the site of choice?
5. The spinal cord is enlarged in two regions, the What is the significance of these enlargements?
6. How does the position of the gray and white matter differ in the spinal cord and the cerebral hemispheres?
7. From the key, choose the name of the tract that might be damaged when the following conditions are observed. (More than one choice may apply.) 1. 2. 3.