Understanding Our Breathing System

What is the main organ used for breathing in the human body?

• Heart

• Lungs

• Stomach

• Brain

Which part of the respiratory system is responsible for filtering the air we breathe?

• Lungs

• Nose

• Mouth

• Stomach

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

• Esophagus

• Trachea

• Intestine

• Vein

What happens to your chest when you breathe in?

• It gets smaller

• It stays the same

• It gets bigger

• It disappears

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

• Exhalation

• Inhalation

• Circulation

• Digestion

Why do we need oxygen?

• To make our hair grow

• To help our bodies produce energy

• To change our eye color

• To make us taller

What is the name of the small air sacs in the lungs where oxygen is exchanged?

• Alveoli

• Bronchi

• Capillaries

• Arteries

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

• Larynx

• Pharynx

• Diaphragm

• Bronchi

What is the muscle called that helps the lungs to expand and contract?

• Heart

• Diaphragm

• Liver

• Kidney

What do we call the process of breathing out?

• Inhalation

• Exhalation

• Circulation

• Digestion