Write the scientific names of the causal organisms of elephantiasis and ringworm in humans. Mention the body parts affected by them.

Explanation

### Step-by-Step Solution:

1. **Identify the Causal Organisms for Elephantiasis:**
- The scientific name for the causal organism of elephantiasis is **Wuchereria bancrofti**. Another species that can cause similar symptoms is **Wuchereria malayi**.

2. **Identify the Affected Body Parts for Elephantiasis:**
- Elephantiasis primarily affects the **lymphatic system**, particularly leading to swelling in the **lower limbs**.

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