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Related Practice Questions :
Unmyelinated nerve fiber is:
1. Not enclosed by a Schwann cell and hence not enclosed by a myelin sheath.
2. Enclosed by a Schwann cell that does not form a myelin sheath.
3. Not enclosed by a Schwann cell but enclosed by a myelin sheath formed by oligodendrocytes.
4. Not found in the autonomous and the somatic neural system.
 77%
From NCERT
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The brain stem does not include :
1. Mid-brain 
2. Medulla oblongata
3. Pons Varolii
4. Cerebellum 

 69%
From NCERT
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Which of the following is a major coordinating center for sensory and motor signaling for the cerebrum?
1. Hypothalamus
2. Thalamus
3. Corpora quadrigemina
4. Amygdala

 61%
From NCERT
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Myelin sheath is produced by
(1) Schwann cells and Oligodendrocytes

(2) Astrocytes and Schwann cells

(3) Oligodendrocytes and Osteoclasts

(4) Osteoclasts and Astrocytes

 91%
NEET - 2017
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Assertion   :       Some areas of the brain and spinal cord look white.

Reason      :       This is because cell bodies of neurons are situated in those areas.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
 60%
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