What is the main function of the respiratory system?

• To help us see

• To help us hear

• To help us breathe

• To help us digest food

What gas do our lungs take in from the air?

• Carbon Dioxide

• Nitrogen

• Oxygen

• Hydrogen

What gas do our lungs expel when we breathe out?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Methane

What are the two main phases of breathing?

• Eating and Drinking

• Inhalation and Exhalation

• Running and Walking

• Sleeping and Waking

What are the two main components of the respiratory system mentioned in the video?

• Heart and Brain

• Stomach and Liver

• Lungs and Airway

• Kidneys and Bladder

Through which two parts of the body does air first enter when we breathe in?

• Eyes and Ears

• Nose and Mouth

• Hands and Feet

• Stomach and Intestines

Which part of the respiratory system contains the vocal cords?

• Pharynx

• Trachea

• Larynx

• Bronchi

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

• Bronchioles

• Alveoli

• Trachea

• Larynx

What happens to healthy lungs when we breathe in tobacco smoke or very polluted air?

• They turn pinker

• They grow larger

• They turn brown and stop working properly

• They become stronger

What are two ways to keep your lungs healthy?

• Eating unhealthy food and sleeping a lot

• Avoiding exercise and smoking

• Doing lots of physical exercise and never smoking

• Watching TV all day and drinking sugary drinks