3. Which structure is the voice box?a Name the structure that prevents food from

Question

3. Which structure is the voice box?a Name the structure that prevents food from entering the voice box. A pair of muscular folds located in the voice box is called the 4. In which cavity are the lungs located? tharacie 5. What 6. What is the function of th prevents the trachea from collapsing during inhalation? car e mucus secreted by the lining of the nasal cavity, trachea and bronchi? 7. Contraction of the diaphragm and rib cage muscles causes increase increase/decrease) in lung volume. of 8. Air going in or out of the lungs depends upon the differences in the air between the lungs and the CONNECT WITH THE CONCEPTS Frogs live in water as well as on land. How do they exchange gases while living in the two types of habitats? In water: On land: 1. You are living in Houston and decided to make a trip to Pike's Peak (14,000 ft. above sea level) in Colorado Springs. When you reached the peak, you experienced dizziness and difficulty in breathing. Describe the differences in the atmosphere and what affect it would have on respiratory system. 2. 108

Explanation / Answer

3. Larynx

Epiglottis

Vocal folds/vestibular folds

4. Thoracic cavity

5. Cartilagenous rings

6. To trap dust particles and microbes

7. Increases

8. Partial pressure

Atmosphere

1. In water they absorb oxygen through skin

On land they respire through lungs

2. As we move up to higher altitudes, the air pressure reduces. The amount of oxygen in the air remains same. Beacause of lower air pressure, air is thinner and contain less gases in a given volume. Every time we breathe, the air going in will contain less oxygen molecules. This makes us breathe faster and deeper to get enough oxygen. This leads to shortness of breath or breathlessness, dizziness, tiredness etc.

2. Nasal cavity, pharynx, glottis, larynx, trachea, brochure, bronchioles, alveoli.

Actually glottis is a part of larynx.

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