Anatomy & Physiology - (Respiratory System) L3

What percentage of carbon dioxide is present in the air we exhale?

• 0.4%

• 16%

• 4%

• 79%

What is the percentage of nitrogen in the air we inhale?

• 79%

• 20%

• 16%

• 4%

Which gas increases in percentage from inhaled to exhaled air?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Helium

What is the main function of the trachea in the respiratory system?

• To exchange gases with the blood

• To filter and warm the air

• To transport air to the bronchi

• To produce mucus

What is the primary function of the ribcage during breathing?

• To protect the heart

• To assist in digestion

• To support the lungs

• To regulate body temperature

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

• Exhalation

• Inhalation

• Circulation

• Respiration

What is the process of releasing air from the lungs called?

• Inhalation

• Exhalation

• Circulation

• Respiration

During which process does the diaphragm move up?

• Inspiration

• Expiration

• Inhalation

• Relaxation

What does the pharynx connect to the larynx?

• Nasal cavity

• Stomach

• Heart

• Brain

Which organ is directly involved in voice production?

• Larynx

• Stomach

• Pancreas

• Kidney