Exploring the Respiratory System

What is the primary function of the respiratory system?

• To digest food

• To circulate blood

• To exchange gases

• To protect the body from infections

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

• Heart

• Lungs

• Stomach

• Liver

What is the name of the tube that carries air from the throat to the lungs?

• Esophagus

• Trachea

• Bronchi

• Diaphragm

Which muscle helps the lungs to inhale and exhale air?

• Biceps

• Diaphragm

• Quadriceps

• Hamstrings

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

• Exhalation

• Inhalation

• Circulation

• Digestion

What are the tiny air sacs in the lungs where gas exchange occurs called?

• Alveoli

• Bronchioles

• Capillaries

• Nephrons

Which of the following is a waste product of respiration that is exhaled from the body?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

What part of the respiratory system is also known as the voice box?

• Pharynx

• Larynx

• Epiglottis

• Nasal cavity

Which of the following is NOT a part of the respiratory system?

• Trachea

• Bronchi

• Kidneys

• Alveoli

What is the process of expelling air?

• Circulation

• Exhalation

• Digestion

• Inhalation