The mouth of a human being has two pipe like openings. One for air and one for food. Why does food enter only the food pipe and not the wind pipe?

The food enters only into the food pipe and not the wind pipe.The food pipe opens into the digestive tract while the wind pipe opens into the respiratory system.If the food enters into the respiratory system it can choke us or cause other major problems in our body. If the food goes into the food pipe , it canbe digested properly and be used to obtain energy. Therefore, the food enters the food pipe and not the windpipe .