Respiratory System Quiz

What is the main function of breathing?

• To transport water vapor to the body's cells

• To transport oxygen to the body's cells

• To transport carbon dioxide to the body's cells

• To transport nitrogen to the body's cells

Which system controls the unconscious functions of breathing?

• Central nervous system

• Autonomic nervous system

• Peripheral nervous system

• Somatic nervous system

What happens to the diaphragm and intercostal muscles when the body prepares to take in oxygen-rich air?

• The diaphragm contracts and the intercostal muscles flatten

• The diaphragm flattens and the intercostal muscles contract

• Both the diaphragm and intercostal muscles contract

• Both the diaphragm and intercostal muscles relax

What is the function of the bronchioles in the respiratory system?

• To transport carbon dioxide to the alveoli

• To divide into thousands of tinier passages

• To divide into bronchi

• To transport oxygen to the alveoli

What is the function of the alveoli in the respiratory system?

• To transport carbon dioxide to the capillaries

• To transport oxygen to the capillaries

• To exchange oxygen and carbon dioxide with the capillaries

• To store oxygen and carbon dioxide

What is the role of hemoglobin in the respiratory system?

• To transport oxygen to the alveoli

• To transport oxygen throughout the body

• To transport carbon dioxide to the alveoli

• To exchange oxygen and carbon dioxide with the alveoli

What is the basic process by which oxygen and carbon dioxide are exchanged in the respiratory system?

• Filtration

• Active transport

• Osmosis

• Diffusion

How is carbon dioxide expelled from the body during exhalation?

• The diaphragm flattens and the intercostal muscles contract

• The diaphragm relaxes and the intercostal muscles contract

• The diaphragm contracts and the intercostal muscles flatten

• The diaphragm contracts and the intercostal muscles relax

What is the approximate number of times the lungs inhale and exhale in a minute?

• 5-10 times

• 20-25 times

• 10-15 times

• 15-20 times

How much air do the lungs inhale and exhale each day?

• 5,000 liters

• 12,500 liters

• 7,500 liters

• 10,000 liters