Exploring the Respiratory System for Kids

What is the primary function of the respiratory system?

• To remove waste from the body

• To bring oxygen into the body

• To circulate blood

• To digest food

Which muscle helps in breathing by changing shape as you inhale and exhale?

• Heart

• Diaphragm

• Stomach

• Liver

Which side of the body has a smaller lung, and why?

• Left, to make room for the heart

• Right, to make room for the liver

• Left, to make room for the spleen

• Right, to make room for the stomach

What is the dome-shaped muscle that works with the lungs to help you breathe?

• Pectoral

• Diaphragm

• Intercostal

• Abdominal

What is the role of cilia in the respiratory system?

• To absorb nutrients

• To pump blood

• To connect nerves

• To filter and clean the air

Where does the exchange of oxygen and carbon dioxide occur in the lungs?

• Bronchi

• Trachea

• Alveoli

• Diaphragm

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

• To produce mucus

• To connect the nose to the lungs

• To carry air into the lungs

• To filter blood

What prevents food and liquids from entering the lungs?

• Mouth

• Esophagus

• Epiglottis

• Trachea

What is the process called where carbon dioxide is created in your cells?

• Diffusion

• Respiration

• Osmosis

• Filtration

How many times do you probably breathe while watching a short video?

• 20 to 30 times

• 50 to 70 times

• 75 to 100 times

• Over 150 times