Neural Pathways & Nerve Fiber Types — NEET Biology
📚 Practice ConceptDistinguish between: (a) afferent neurons and efferent neurons (b) impulse conduction in a myelinated nerve fibre and unmyelinated nerve fibre (f) cranial nerves and spinal nerves.
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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