Question

1. what is the correct sequence for airflow through the conducting zone?

a) trachea → nose → pharynx → larynx
b) nose → pharynx → larynx → trachea
c) pharynx → nose → trachea → larynx
d) nose → trachea → pharynx → larynx

Explanation:

Air enters the respiratory system through the nose. From the nose, it moves to the pharynx (throat), then to the larynx (voice box), and finally to the trachea (windpipe). This is the correct anatomical sequence of the conducting zone for airflow. Options A, C, and D have incorrect orders of these structures.

Answer:

B. Nose → Pharynx → Larynx → Trachea