Understanding Human Breathing

What happens to your chest when you breathe in?

• Your chest remains the same.

• Your chest expands.

• Your chest deflates.

• Your chest contracts.

What do we call the air we breathe in?

• inhaled air

• carbon dioxide

• ambient air

• exhaled air

What do we call the air we breathe out?

• Inhaled air

• Carbon dioxide

• Oxygen

• Exhaled air

How does your chest move when you exhale?

• The chest moves inward and downward.

• The chest moves outward and upward.

• The chest remains still.

• The chest expands and rises.

What is the main gas we take in when we inhale?

• Carbon Dioxide

• Nitrogen

• Hydrogen

• Oxygen

What is the main gas we release when we exhale?

• Oxygen

• Carbon dioxide

• Nitrogen

• Hydrogen

Does your chest rise or fall when you inhale?

• Your chest remains the same when you inhale.

• Your chest falls when you inhale.

• Your chest rises when you inhale.

• Your chest rises and falls simultaneously when you inhale.

What helps your lungs fill with air?

• The heart pumps blood to the lungs.

• The ribs expand to push air out of the lungs.

• The trachea filters air before it reaches the lungs.

• The diaphragm and intercostal muscles help your lungs fill with air.

What happens to your chest when you take a deep breath?

• Your chest fills with water instead of air.

• Your chest shrinks as you exhale.

• Your chest expands as your lungs fill with air.

• Your chest remains the same size regardless of breathing.

What is the purpose of breathing?

• To aid in digestion

• To provide nutrients to the body

• The purpose of breathing is to supply oxygen to the body and remove carbon dioxide.

• To regulate body temperature