Respiratory System Quiz

What are the primary organs of the respiratory system?

• Lungs

• Liver

• Stomach

• Heart

Which organ is responsible for the exchange of oxygen and carbon dioxide in the body?

• heart

• lungs

• liver

• stomach

Name the structure that separates the nasal cavity from the oral cavity.

• palate

• esophagus

• pharynx

• trachea

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

• To carry air from the larynx to the lungs

• To regulate the temperature of the air entering the lungs

• To carry blood from the heart to the lungs

• To produce mucus for the lungs

Explain the process of inhalation and exhalation.

• During inhalation, the chest cavity decreases in volume, while it increases in volume during exhalation.

• The diaphragm contracts and moves upward during inhalation, while it relaxes and moves downward during exhalation.

• The diaphragm contracts and moves downward during inhalation, while it relaxes and moves upward during exhalation.

• Inhalation is the process of exhaling air out of the lungs, while exhalation is the process of inhaling air into the lungs.

What role do the diaphragm and intercostal muscles play in breathing?

• They regulate the body temperature

• They assist in pumping blood to the heart

• They help in expanding the chest cavity and creating a pressure difference for air to be drawn into the lungs.

• They help in digesting food in the stomach

How does the respiratory system help in maintaining the body's acid-base balance?

• Regulating the levels of carbon dioxide in the blood through breathing

• Producing more red blood cells to carry oxygen

• Filtering out excess water from the blood

• Regulating the levels of nitrogen in the blood through breathing

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

• To provide structural support for the trachea

• To produce oxygen for the body

• To sweep mucus and foreign particles out of the airways

• To regulate the temperature of the air in the lungs

Describe the process of gas exchange in the alveoli.

• Gas exchange in the alveoli is not a significant process for the respiratory system.

• Carbon dioxide diffuses into the bloodstream, while oxygen diffuses into the air in the alveoli.

• The alveoli release oxygen into the air and absorb carbon dioxide from the bloodstream.

• Oxygen diffuses into the bloodstream, while carbon dioxide diffuses into the air in the alveoli.

How does the respiratory system help in regulating blood pressure?

• By regulating the pH levels in the blood

• By controlling muscle movement

• By producing insulin

• By regulating body temperature