Give reason:(a) Sometimes medicines dropped into the eyes come into the nose and even throat.

The reason why sometimes medicines dropped into the eyes come into the nose and even throat is due to the connection between our eyes, nose, and throat through a system called the nasolacrimal system.

Here are the steps explaining this:

1. The nasolacrimal system is a drainage system that connects our eyes to our nose. It consists of tiny tubes called tear ducts, which start at the inner corner of the eye.

2. When we put drops in our eyes, the excess fluid drains away through these tear ducts.

3. The tear ducts lead down into the nose. This is why when we cry, our nose often runs as the tears drain into the nasal cavity.

4. The nasal cavity is connected to the throat. When we swallow, the action can draw fluids from the nasal cavity down into the throat.

5. Therefore, when you put drops in your eyes, they can drain through the tear ducts, into the nose, and then be drawn down into the throat when you swallow. This is why you can sometimes taste eye drops or feel them in your throat.