Schwann's Cells and Nodes of Ranvier are found in

Options

A. Neurons
B. Osteblasts
C. Chondroblasts
D. Gland cells

Answer

**Step-by-Step Solution:**

1. **Identify the Components**: The question asks about Schwann's cells and Nodes of Ranvier. First, we need to understand what these components are.

2. **Define Schwann's Cells**: Schwann's cells are a type of glial cell in the peripheral nervous system. They are responsible for the formation of the myelin sheath around the axons of neurons.

3. **Define Nodes of Ranvier**: Nodes of Ranvier are small gaps that occur between the myelin sheath segments along the axon. These nodes are crucial for the rapid conduction of nerve impulses.

4. **Location**: Both Schwann's cells and Nodes of Ranvier are found in neurons, specifically in the peripheral nervous system. Neurons are the structural and functional units of the nervous system.

5. **Functionality**: Schwann's cells wrap around the axon to form the myelin sheath, which insulates the axon and increases the speed of electrical impulses. The Nodes of Ranvier facilitate saltatory conduction, where the nerve impulse jumps from one node to the next, enhancing the speed of transmission.

6. **Conclusion**: Therefore, Schwann's cells and Nodes of Ranvier are found in neurons, specifically in the peripheral nervous system.

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