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Studyguide on the Nervous System –
The Spinal Cord and Spinal Reflexes
1. In general, how does the width of the spinal cord change?
2. Where does the cauda equine begin?
3. What is the cauda equine?
4. Label the 30 segments of the spinal cord. The last segment, Co1, is missing on this drawing.
5. What are the dorsal roots ganglia?
6. Where do the sensory axons enter the spinal cord?
7. Where do the motor axons exit the spinal cord?
8. Label the posterior grey horns, anterior grey horns, and lateral grey horns of the spinal cord.
9.
What do the lateral grey horns contain?
10. Where is the cerebrospinal fluid found?
11. Label the spinal cord below with the following terms: central canal, posterior median sulcus, anterior median
fissure, grey matter, white matter, pia mater, arachnoid, dura mater, dorsal root ganglion
12. What is a tract?
13. What is the difference between an ascending tract and a descending tract?
14. What is a column?
15. What is a spinal reflex?
16. Draw an example of a reflex arc:
17. What is the difference between a simple reflex and a complex reflex?
18. Which takes more time, a complex reflex or a simple reflex?