Iter connects …………… ventricle of diencephalon with …………… ventricle of medulla oblongata.

Explanation

To answer the question, we need to identify the specific ventricles in the brain that are connected by the structure known as the iter, also referred to as the Aqueduct of Sylvius. Here’s a step-by-step solution:

### Step-by-Step Solution:

1. **Identify the Structure**: The iter is also known as the Aqueduct of Sylvius. It is a narrow channel in the brain.

2. **Determine the Location**: The iter connects two specific ventricles in the brain. It is located in the mesencephalon, which is part of the midbrain.

...