Overview of the respiratory system

What is the major function of the respiratory system?

• To regulate body temperature

• To transport nutrients to the cells

• To produce energy for the body

• To exchange oxygen and carbon dioxide between the body and the environment

Where does the gas exchange process take place within the lungs?

• Trachea

• Bronchi

• Alveoli

• Respiratory bronchioles

What is the function of the nasal conchae or turbinates?

• To protect the airway

• To produce mucus

• To sense smell

• To warm, moisten, and cleanse inhaled air

What is the role of the tonsils in the pharynx?

• To respond to inhaled pathogens

• To protect the airway

• To produce mucus

• To warm, moisten, and cleanse inhaled air

What is the function of the epiglottis in the larynx?

• To sense smell

• To direct food and drink to the esophagus

• To protect the airway

• To warm, moisten, and cleanse inhaled air

Where does the trachea split into two primary bronchi?

• Pharynx

• Lungs

• Bronchioles

• Alveoli

What is the function of the smooth muscle in the airways?

• To warm, moisten, and cleanse inhaled air

• To produce mucus

• To protect the airway

• To constrict or dilate the airways

Where does the gas exchange process take place in the respiratory division?

• Bronchi

• Trachea

• Respiratory bronchioles

• Alveoli

What is the main function of type I squamous cells in the alveolar wall?

• To secrete surfactant

• To allow rapid gas diffusion

• To produce mucus

• To engulf inhaled particles

What is the function of macrophages in the alveoli?

• To secrete surfactant

• To allow rapid gas diffusion

• To engulf inhaled particles

• To produce mucus