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Cranial and spinal nerves...

Cranial and spinal nerves

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### Step-by-Step Solution 1. **Definition of Cranial Nerves**: - Cranial nerves are the nerves that emerge directly from the brain. They are responsible for transmitting information between the brain and various parts of the head, neck, and body. 2. **Definition of Spinal Nerves**: - Spinal nerves are the nerves that emerge from the spinal cord. They connect the spinal cord to the rest of the body, facilitating communication between the central nervous system and peripheral body parts. ...
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Knowledge Check

  • Read the given statements and select the correct option. (i)Synaptic cleft of neurons secreates adrenaline. (ii)Myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon. (iii)Non-myelinated nerve fibre is enclosed by a Schwann cell that does not form a myelin sheath. (iv)Spinal and cranial nerves are made of non-myelinated nerve fibres.

    A
    Statements (i) and (ii) are correct but statements (iii) and (iv) are incorrect.
    B
    Statements (i), (ii) and (iii) are correct but statement (iv) is incorrect.
    C
    Statements (iii) and (iv) are correct but statements (i) and (ii) are incorrect.
    D
    Statement (ii) and (iii) are correct but statements (i) and (iv) are incorrect.

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