Respiratory System Quiz

What is the main function of breathing?

• To transport oxygen to the body's cells

• To transport water vapor 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 function of breathing?

• Respiratory system

• Endocrine system

• Autonomic nervous system

• Nervous system

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

• Both diaphragm and intercostal muscles flatten

• Both diaphragm and intercostal muscles contract

• Diaphragm flattens and intercostal muscles contract

• Diaphragm contracts and intercostal muscles flatten

What is the function of alveoli in the lungs?

• To produce mucus for the respiratory system

• To exchange oxygen and carbon dioxide with the blood

• To transport carbon dioxide to the body's cells

• To transport oxygen to the body's cells

What is the role of hemoglobin in the respiratory system?

• To transport nitrogen in the blood

• To transport water in the blood

• To transport carbon dioxide in the blood

• To transport oxygen in the blood

What is the process by which oxygen and carbon dioxide are exchanged in the lungs?

• Filtration

• Diffusion

• Active transport

• Osmosis

How is carbon dioxide expelled from the body?

• Through exhalation from the lungs

• Through the urinary system

• Through the digestive system

• Through the skin

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

• 5-10 times

• 10-15 times

• 15-20 times

• 20-25 times

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

• 5,000 liters

• 7,500 liters

• 10,000 liters

• 12,500 liters

What is the main function of the autonomic nervous system in the respiratory process?

• To unconsciously control vital functions

• To consciously control breathing

• To regulate blood pressure

• To regulate body temperature