mekanisme respirasi

What is the first part of the respiratory system that air passes through?

• Mouth

• Nose

• Lungs

• Trachea

What are the tiny air sacs in the lungs called?

• Veins

• Alveoli

• Capillaries

• Bronchi

What happens to oxygen in the alveoli?

• It is stored in the lungs

• It is turned into carbon dioxide

• It is released into the air

• It is absorbed by blood cells

What is expelled from the body during expiration?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Hydrogen

Where does oxygen-rich blood go after leaving the lungs?

• To the heart

• To the stomach

• To the brain

• To the muscles