Multiple Choice
Which of the following statements about the meninges is false?
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12. The Central Nervous System
Introduction to the Central Nervous System
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What is the tapered end of the spinal cord called?
A
Filum terminale
B
Conus medullaris
C
Cerebellar tonsil
D
Cauda equina
Verified step by step guidance1
Understand the anatomy of the spinal cord: The spinal cord is a cylindrical structure that extends from the brainstem to the lower back. It has specific regions and structures, including a tapered end.
Learn the key terms provided in the question: The options include 'Filum terminale,' 'Conus medullaris,' 'Cerebellar tonsil,' and 'Cauda equina.' Each term refers to a distinct anatomical structure.
Define 'Conus medullaris': This is the tapered, cone-shaped end of the spinal cord, typically located around the L1-L2 vertebral level in adults. It marks the terminal portion of the spinal cord proper.
Differentiate the other terms: 'Filum terminale' is a fibrous extension of the pia mater that anchors the spinal cord to the coccyx. 'Cauda equina' refers to the bundle of spinal nerves that extend beyond the conus medullaris. 'Cerebellar tonsil' is unrelated to the spinal cord and refers to a part of the cerebellum in the brain.
Conclude that the correct answer is 'Conus medullaris,' as it specifically describes the tapered end of the spinal cord.
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