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PinkMonkey Online Study Guide-Biology

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Figure 17.2 A. Nasal passage and pharynx
                               B. Larynx
                               C. Interior of the larynx

(iv) Trachea or windpipe is a tube about 4" long running from the larynx to the lungs. It is supported by C-shaped cartilages which keep the trachea distended. It is internally lined by cilia beating upwards, driving out dust particles. On entering the thorax, the trachea divides into two branches called bronchi, each entering the lung on its side.

(B) Respiratory organs (lungs)

Figure 17.3 Situation of the lungs

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Table of Contents

17.0 - Introduction
17.1 - Gaseous Exchange and Transport

Chapter 18


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