Identify the autoimmune disease and type of muscle involved.

Options

A. Myasthenia gravis , skeletal muscle
B. Myasthenia gravis , smooth muscle
C. Muscular dystrophy , skeletal muscle
D. Muscular dystrophy , smooth muscle

Answer

### Step-by-Step Solution:

1. **Understanding Autoimmune Diseases**:
- An autoimmune disease occurs when the immune system mistakenly attacks the body's own tissues. This can lead to various health issues as the immune system fails to recognize its own cells.

2. **Identifying Myasthenia Gravis**:
- Myasthenia Gravis is a specific autoimmune disease where the immune system targets and disrupts communication between nerves and muscles, leading to muscle weakness.

3. **Types of Muscles Involved**:
- The muscles affected by Myasthenia Gravis are voluntary muscles, also known as skeletal muscles. These include muscles that we can consciously control, such as those in the eyes, mouth, throat, and limbs.

4. **Distinguishing from Other Conditions**:
- It is important to differentiate Myasthenia Gravis from other muscle disorders like muscular dystrophy, which is not an autoimmune condition but rather a genetic disorder leading to muscle weakness.

5. **Conclusion**:
- Therefore, the autoimmune disease identified is **Myasthenia Gravis**, and the type of muscle involved is **skeletal muscle**.