Which tissue is afflicted by myasthenia gravis? What is the underlying cause.

Explanation

**Step-by-Step Solution:**

1. **Identify the Tissue Affected by Myasthenia Gravis:**
- Myasthenia gravis primarily affects the skeletal muscle tissue. This is the type of muscle that is responsible for voluntary movements in the body.

2. **Understand the Nature of Myasthenia Gravis:**
- Myasthenia gravis is classified as an autoimmune disorder. This means that the body's immune system mistakenly attacks its own tissues.

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