Respiratory System

What is the function of cilia in the respiratory system?

• Cilia help to trap and move particles and mucus out of the airways.

• Cilia are responsible for gas exchange in the lungs.

• Cilia produce mucus to keep the airways moist.

• Cilia help in the absorption of oxygen in the alveoli.

What is the role of mucus in the respiratory system?

• Mucus traps dust, pathogens, and other particles, helping to keep the airways clear.

• Mucus helps in the exchange of oxygen and carbon dioxide.

• Mucus acts as a lubricant for the lungs during breathing.

• Mucus is responsible for the production of sound during speech.

What gas do we exhale during respiration?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

What is the role of alveoli in the respiratory system?

• Alveoli are responsible for producing mucus in the lungs.

• Alveoli are tiny air sacs where gas exchange occurs; oxygen enters the blood and carbon dioxide is removed.

• Alveoli help in the mechanical process of breathing by expanding and contracting.

• Alveoli are involved in filtering dust and particles from the air.

What is the function of the bronchi?

• To filter and humidify the air before it reaches the lungs.

• To direct air into each lung.

• To exchange oxygen and carbon dioxide in the blood.

• To produce mucus that traps pathogens.

What is the importance of the nasal cavity in the respiratory system?

• It helps in the production of sound during speech.

• It filters, warms, and moistens the air we breathe.

• It is responsible for the exchange of oxygen and carbon dioxide.

• It prevents food from entering the lungs.

How does oxygen travel from the lungs to the bloodstream?

• Oxygen is actively transported through the bronchial tubes.

• Oxygen diffuses through the walls of the alveoli into the capillaries.

• Oxygen is carried by red blood cells from the trachea.

• Oxygen is absorbed directly into the lung tissue.

What is the diaphragm's role in breathing?

• The diaphragm helps to filter air before it enters the lungs.

• The diaphragm contracts and relaxes to help draw air into and push air out of the lungs.

• The diaphragm is responsible for producing sound during speech.

• The diaphragm prevents food from entering the lungs.

What is the term for the tiny hairs that line the respiratory tract?

• Cilia

• Villi

• Microvilli

• Flagella

What are the primary organs involved in the respiratory system?

• Heart, lungs, and kidneys

• Lungs, trachea, bronchi, and alveoli

• Stomach, liver, and intestines

• Skin, muscles, and bones