Respiratory System Quiz

Which organ is responsible for bringing air into the body?

• stomach

• lungs

• heart

• liver

What is the main function of the respiratory system?

• Regulate body temperature

• Facilitate gas exchange

• Digest food

• Produce hormones

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

• Heart

• Trachea

• Liver

• Lungs

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

• esophagus

• bronchus

• trachea

• pharynx

Which organ is responsible for removing carbon dioxide from the body?

• heart

• liver

• stomach

• lungs

What is the dome-shaped muscle below the lungs called?

• diaphragm

• sternum

• esophagus

• trachea

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

• B

• D

• C

• A

What is the process of breathing in called?

• inhalation

• expiration

• respiration

• exhalation

Which of the following is a part of the upper respiratory system?

• Stomach

• Liver

• Nose

• Mouth

What is the name of the tiny air sacs in the lungs where gas exchange occurs?

• Trachea

• Capillaries

• Bronchioles

• Alveoli