Human Respiratory System

What is the main organ of the human respiratory system?

• trachea

• diaphragm

• bronchi

• lungs

What is the function of the lungs?

• To produce hormones for digestion

• To filter toxins from the blood

• The function of the lungs is to facilitate gas exchange, providing oxygen to the blood and removing carbon dioxide.

• To store excess nutrients

What is the role of the diaphragm in breathing?

• The diaphragm prevents air from entering the lungs.

• The diaphragm plays a crucial role in breathing by contracting to allow air in and relaxing to push air out.

• The diaphragm is responsible for blood circulation.

• The diaphragm only helps with swallowing food.

What are the tiny air sacs in the lungs called?

• bronchi

• alveolar ducts

• alveoli

• trachea

What is the process of taking air into the lungs called?

• Ventilation

• Respiration

• Exhalation

• Inhalation

What is the process of expelling air from the lungs called?

• Exhalation

• Ventilation

• Respiration

• Inhalation

What is the name of the tube that connects the throat to the lungs?

• esophagus

• alveoli

• bronchus

• trachea

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

• The purpose of the nasal cavity is to filter, warm, and humidify the air entering the respiratory system.

• To serve as a passage for food.

• To provide a sense of smell only.

• To regulate blood pressure.

What gas do we inhale during respiration?

• Carbon Dioxide

• Hydrogen

• Oxygen

• Nitrogen

What gas do we exhale during respiration?

• Hydrogen

• Nitrogen

• Oxygen

• Carbon dioxide