The respiratory system

Which organ is responsible for the exchange of oxygen and carbon dioxide in the respiratory system?

• Heart

• Liver

• Stomach

• Lungs

What are the tiny air sacs in the lungs called?

• Bronchioles

• Capillaries

• Pleura

• Alveoli

What is the process of inhaling and exhaling called?

• Respiration

• Digestion

• Sweating

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

• Pharynx

• Esophagus

• Trachea

What gas does the Respiratory System absorb?

• Oxygen

• Carbon dioxide

• Nitrogen

• Hydrogen

The Respiratory system contains two bronchi

• True

• Depends on the person

• False

What is the main function of the respiratory system?

• Transporting oxygen to the body

• Producing energy for the body

• Filtering waste from the body

• Regulating body temperature

What is the function of the bronchi in the respiratory system?

• To transport air to the lungs

• To produce mucus to trap dust and bacteria

• To exchange oxygen and carbon dioxide

• To regulate the flow of air in and out of the lungs

When you breathe in air, you bring oxygen gases into your lungs and blow out ________ gases.

• Nitrogen

• Hydrogen

• Carbon dioxide

• Oxygen

Which of the following show the air passage for inhalation?

• Lungs -> Nose -> Trachea

• Nose -> Trachea -> Lungs

• Nose -> Lungs -> Trachea

• Trachea -> Lungs -> Nose