Biology Olympic for Elementary School (Respiratory System)

Following are parts of respiratory tract, EXCEPT ....

• pharynx

• diaphragm

• trachea
• bronchi

Which part of the respiratory system is responsible for filtering and humidifying inhaled air?

• Alveoli

• Bronchi

• Nasal cavity

• Larynx

The main function of the epiglottis is ....

• preventing food from entering the trachea

• producing sound

• controlling airflow

• assisting in oxygen-carbondioxide exchange

Which respiratory structure is commonly referred to as the "windpipe"?

• Bronchus

• Larynx

• Trachea

• Alveolus

The purpose of cilia in the respiratory tract is ....

• to produce mucus

• to filter dust and debris out

• to facilitate gas exchange

• to aid vocalization

Lungs have lobes, the sections which divided lungs and separated by fissures. The numbers of lobes are different in left and right lungs. left lung which is smaller has ... lobes.

• 1

• 2

• 3

• 4

What role does the pleura play in the respiratory system?

• producing mucus

• facilitating gas exchange

• providing a protective lining for the lungs

• controlling airflow

Where are the alveoli located in the respiratory system?

• Trachea

• Bronchi

• At the end of bronchioles

• Right after larynx

What is the importance of the thin walls of alveoli?

• To make the lungs strong

• To allow gas exchange

• To store oxygen for later use

• To filter dust and pathogenic agents from air

What is the term for the volume of air inspired and expired during normal breathing?

• Tidal volume

• Residual volume

• Inspiratory reserve volume

• Expiratory reserve volume