Understanding the Human Respiratory System

What is the main function of the human respiratory system?

• To circulate blood throughout the body

• To digest food and absorb nutrients

• To exchange gases, taking in oxygen and expelling carbon dioxide

• To produce energy in the form of ATP

Where does the air get warmed, humidified, and filtered in the respiratory system?

• In the lungs

• In the bronchi

• In the trachea

• In the nasal cavity

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

• To support the lungs

• To transport air to the bronchi

• To filter the air

• To produce sound

What structure in the lungs is primarily responsible for gas exchange?

• Trachea

• Bronchi

• Alveoli

• Pharynx

What muscle is primarily responsible for expanding and contracting the thoracic cavity during breathing?

• Abdominal muscles

• Heart

• Intercostal muscles

• Diaphragm

How does the nervous system regulate breathing?

• By controlling the heart rate

• By using pH levels to adjust the rate and depth of breathing

• By producing surfactant

• By filtering the air

Which of the following organisms uses gills for gas exchange?

• Humans

• Insects

• Fish

• Earthworms

What is the function of surfactant in the alveoli?

• To produce carbon dioxide

• To transport oxygen

• To decrease surface tension and prevent alveoli collapse

• To increase surface tension

Which medical professional specializes in treating respiratory conditions?

• Cardiologist

• Neurologist

• Pulmonologist

• Gastroenterologist

M

• AA

• ZAZ

• AZA

• AAS