Tag: respiratory system in humans

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Multiple choice zoology gas exchange and smoking gas exchange gas exchange in humans respiratory system in humans

The narrowest and most numerous tubes of lungs are called as

  1. Bronchi

  2. Alveoli

  3. Bronchioles

  4. Tertiary bronchi
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C Correct answer
Explanation

The lungs which form the main respiratory system is a pair of spongy, air-filled organs which is located on either side of the chest in the rib cage. The inhaled air passes through the trachea (windpipe) into the lungs through its tubular branches known as bronchi which further divide into numerous smaller tubes known as the bronchioles.