Q1. Complete the following sentences using the appropriate words:
1. The smallest tubes in the lungs are the ____________________________ .
2. The ____________________________ prevents food from entering the larynx.
3. The pharynx is a passageway for __________________________________ and ________________________ .
4. The alveoli are surrounded by ____________________________ .
5. Air entering your body is first moistened and warmed in the ___________________________ .
6. The trachea is kept open by rings made of ____________________________.
Q2. What are the chief functions of the respiratory system?
Q3. Explain the three pathways of breakdown of glucose in living organisms.
Q4. Name the energy currency in the living organisms. When and where it is produced?
Q5. Draw the diagram showing Human Respiratory System. Label the following parts.
a) Alveolus
b) Trachea
c) Bronchus
d) Lungs
Answers
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Answer:
1 . Bronchioles
2. Epiglottis
3. Air and food
4. Tiny blood vessels known as capillaries
5. Nasal chambers
6. Hyalin cartilage
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