Lung Structure and Function

How long can a person live without breathing?

• Two weeks

• Two days

• Two minutes

• One week

What is the main job of the respiratory system?

• To digest food

• To transport oxygen and remove extra carbon dioxide

• To circulate blood

• To filter waste from the body

What is the main muscle for breathing?

• Lungs

• Biceps

• Diaphragm

• Heart

Through which part of the body is air pulled into the airway?

• Eyes

• Nose or mouth

• Skin

• Ears

The 2 branches which join the windpipe to the lungs​

• Diaphragm

• Bronchi

• Trachea

• Esophagus

What are the small tubes called that bronchi separate into?

• Veins

• Bronchioles

• Alveoli

• Capillaries

What is at the end of each bronchiole?

• Nose

• Heart

• Capillaries

• Air sacs

Name the gas produced during respiration that must be removed?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

Where does the exchange of gases occur?

• In the capillaries

• In the air sacs

• In the muscles

• In the heart

What part of your skeleton helps protect your lungs and heart?

• ribs

• skull

• collarbone

• spine