Respiratory System

What happens when you inhale?

• Oxygen is released into the air.

• Carbon dioxide is picked up by the lungs.

• Oxygen-rich air is taken into the lungs.

• Nitrogen is converted into oxygen.

Why is it essential for your body to get rid of carbon dioxide?

• Carbon dioxide is toxic to the bloodstream.

• It can cause respiratory infections.

• Too much carbon dioxide can be deadly.

• Carbon dioxide interferes with oxygen absorption.

What percentage of the air we breathe is oxygen?

• 21%

• 78 %

• 100 %

• 50 %

Which of the following is NOT a part of the airway in the respiratory system?

• Nose

• Larynx

• Stomach

• Bronchioles

Which muscles are involved in the process of breathing?

• Quadriceps

• Diaphragm and intercostal muscles

• Hamstrings

• Biceps

How is glucose broken down into smaller pieces to provide energy to cells?

• With the help of carbon dioxide

• With the help of oxygen

• By the liver

• By the heart

What is the main function of alveoli in the lungs?

• To release carbon dioxide into the bloodstream

• To absorb nitrogen from the air

• To allow oxygen to pass into the lungs

• To supply glucose to the body

Which part of the respiratory system looks like an upside-down tree?

• Trachea

• Bronchus

• Alveoli

• Bronchial tree