Read the following statements about
conducting part of respiratory system
and choose the correct option:
i. They transport atmospheric air to
trachea only
ii. They humidify the air
iii. They warm the air upto body
temperature
iv. They clear the air from foreign
particles
Answers
Answer:
Air enters the respiratory system through the nose and mouth and passes down the throat (pharynx) and through the voice box, or larynx. The entrance to the larynx is covered by a small flap of tissue (epiglottis) that automatically closes during swallowing, thus preventing food or drink from entering the airways.
ii/ An air purifier serves a different purpose than a humidifier. Air purifiers are designed to clear the air of allergens, dust, reduce mold or control odors. Humidifiers, on the other hand, work solely to control the humidity level in a room. They do nothing to control air quality or the numbers of particles in the air.
iii] Spending time outside in very hot weather can increase a person's body temperature, as can being in a hot indoor environment for extended periods. Wearing too many layers in either situation can also lead to an increase in body temperature.
iv} Carbon dioxide is made in our bodies as cells do their jobs. The lungs and respiratory system allow oxygen in the air to be taken into the body, while also letting the body get rid of carbon dioxide in the air breathed out.