Question:
Study the following statements regarding the central nervous system and identify the incorrect statements:
A) The white matter of cerebral hemispheres is called arbor vitae.
B) Thalamus is major coordinating centre for sensory and motor signalling.
C) The extension of spinal cord to the coccyx is called conus medullaris.
D) The myelocoel and diocoel are connected by iter.
Study the following statements regarding the central nervous system and identify the incorrect statements:
A) The white matter of cerebral hemispheres is called arbor vitae.
B) Thalamus is major coordinating centre for sensory and motor signalling.
C) The extension of spinal cord to the coccyx is called conus medullaris.
D) The myelocoel and diocoel are connected by iter.
B) Thalamus is major coordinating centre for sensory and motor signalling.
C) The extension of spinal cord to the coccyx is called conus medullaris.
D) The myelocoel and diocoel are connected by iter.
Show Hint
"Arbor vitae" is only in the cerebellum—don't confuse it with the cerebrum!
Updated On: Jun 10, 2026
- A & D
- A & C
- B & C
- B & D
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Concept
Anatomy of the Central Nervous System.
Step 2: Analysis
* Statement A is incorrect: The "arbor vitae" (tree of life) refers to the white matter in the *cerebellum*, not the cerebral hemispheres. * Statement B is correct: The thalamus acts as the major relay and coordinating center for sensory and motor signals. * Statement C is incorrect: The conus medullaris is the tapered end of the spinal cord (usually at L1/L2 level), not the extension down to the coccyx (which is the filum terminale). * Statement D is correct: The myelocoel and diocoel are connected by the iter.
Step 3: Conclusion
Statements A and C are incorrect.
Final Answer: (B)
Anatomy of the Central Nervous System.
Step 2: Analysis
* Statement A is incorrect: The "arbor vitae" (tree of life) refers to the white matter in the *cerebellum*, not the cerebral hemispheres. * Statement B is correct: The thalamus acts as the major relay and coordinating center for sensory and motor signals. * Statement C is incorrect: The conus medullaris is the tapered end of the spinal cord (usually at L1/L2 level), not the extension down to the coccyx (which is the filum terminale). * Statement D is correct: The myelocoel and diocoel are connected by the iter.
Step 3: Conclusion
Statements A and C are incorrect.
Final Answer: (B)
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