Which is the common passage for food and air?

What is the nature of the tracheal rings in a rabbit?

Which of the following serves as a common passage for both swallowing food and breathing?

Which structure is composed of yellow elastic cartilage?

In the human respiratory system,the conducting zone extends from $:-$

Two friends are eating together at a dining table. One of them suddenly starts coughing while swallowing food. This coughing action is likely due to the improper movement of the .......... .