Question

Which of the following is a correct sequence of movement of air during inspiration?

• A. nose $\to$ nasal cavity $\to$ pharynx $\to$ trachea $\to$larynx $\to$ primary bronchi $\to$ secondary bronchi $\to$ tertiary bronchi $\to$ alveoli $\to$ blood capillaries
• B. nasal cavity $\to$nose $\to$ pharynx $\to$ larynx $\to$ trachea $\to$ primary bronchi $\to$ secondary bronchi $\to$ tertiary bronchi $\to$ alveoli $\to$ blood capillaries
• C. nose $\to$ nasal cavity $\to$ larynx $\to$pharynx $\to$ trachea $\to$ primary bronchi $\to$ secondary bronchi $\to$ tertiary bronchi $\to$ alveoli $\to$ blood capillaries
• D. nose $\to$ nasal cavity $\to$ pharynx $\to$ larynx $\to$ trachea $\to$ primary bronchi $\to$ secondary bronchi $\to$ tertiary bronchi $\to$ alveoli $\to$ blood capillaries

Answer 1

The correct option is D nose $\to$ nasal cavity $\to$ pharynx $\to$ larynx $\to$ trachea $\to$ primary bronchi $\to$ secondary bronchi $\to$ tertiary bronchi $\to$ alveoli $\to$ blood capillaries

The correct sequence of movement of air during inspiration is:
nose $\to$ nasal cavity $\to$ pharynx $\to$ larynx $\to$ trachea $\to$ primary bronchi $\to$ secondary bronchi $\to$ tertiary bronchi $\to$ alveoli $\to$ blood capillaries



We inhale air through our nose and it then passes through the nasal cavity. From the nasal cavity, the air passes to the pharynx, and then to the larynx. The larynx leads to the windpipe also called the trachea. The air from the larynx passes into the windpipe. The trachea divides into two parts to form the left and right primary bronchi. The primary bronchus divides to form secondary bronchi which further divide to form tertiary bronchi. The tertiary bronchi further branch into bronchioles. The terminal bronchioles have the air sacs or alveoli. Alveoli have a rich supply of blood capillaries. The exchange of gases takes place between the walls of the alveoli and the blood capillaries.