Class 11 · Neural Control and Coordination

Brain Development and Circadian Rhythm — NEET Biology

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Answer the following: (a) Which part of the human brain is the most developed? (b) Which part of our central neural system acts as a master clock?

NCERT Biology · Class 11 · Chapter 18 · Paragraph 28
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Which of the following statements about the major divisions of the human neural system are NOT correct? S1. The Central Neural System (CNS) includes the brain and the spinal cord, serving as the site for information processing. S2. The Peripheral Neural System (PNS) is composed of the brain and all cranial nerves extending to the periphery. S3. All nerve fibres of the PNS are classified as either afferent or efferent. S4. Myelinated nerve fibres are primarily found within the spinal and cranial nerves, ensuring rapid impulse conduction. S5. Unipolar neurons, characterized by a cell body with one axon only, are commonly found in the cerebral cortex of the brain. S6. The autonomic neural system is a subdivision of the CNS that regulates involuntary organs. Choose the option with only the NOT correct statements:

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