Question

1. The ____ function as a lid to the larynx
2. From the larynx, the air moves to the ______
3. The trachea divides into two branches ____
4. Beneath the lungs, a dome-shaped muscle called the ____ is present.
5. At the end of each bronchìole, there are clumps of tiny air sacs ______is present.​

Answer 1

1. The epiglottis, a cartilaginous, leaf-shaped flap, functions as a lid to the larynx and, during the act of swallowing, controls the traffic of air and food.

2. Larynx or Voice Box

3. The human trachea divides into two main bronchi (also called mainstem bronchi), that extend laterally (but not symmetrically) into the left and right lung respectively, at the level of the sternum. The point where the trachea divides into the bronchi is called the carina.

4. The diaphragm, located below the lungs, is the major muscle of respiration. It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily. Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges.

5. At the very end of the air passages are clusters of small air filled sacs called alveoli (singular: alveolus). These air sacs are surrounded by tiny blood vessels called capillaries.

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Answer 2

Answer:

1. epiglottis cartilaginous leas shaped flap

2. Voice box

3. Bronchi

4. Diaphragm

5. Alveoli