Question

.Bi.P.C
The human lungs neither draw in air themselves nor push it out.
2
Name the structures that help in normal respiration.​

Answer 1

Answer:

The walls of the trachea (pronounced: TRAY-kee-uh) are strengthened by stiff rings of cartilage to keep it open. The trachea is also lined with cilia, which sweep fluids and foreign particles out of the airway so that they stay out of the lungs.

Explanation:

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Answer 2

The nose, pharynx, larynx, trachea and bronchi all work like a system of pipes through which the air is funnelled down into our lungs.