Respiratory System Intro

What is the primary function of the respiratory system?

• To circulate blood throughout the body

• To exchange gases between the body and the environment

• To digest food and absorb nutrients

• To protect the body from pathogens

Which structure in the respiratory system is responsible for voice production?

• Trachea

• Larynx

• Bronchi

• Alveoli

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

• To filter dust and pathogens from the air

• To humidify and warm the air

• To facilitate gas exchange with the blood

• To transport air to the bronchi

Which muscle is primarily responsible for the process of inhalation?

• Intercostal muscles

• Diaphragm

• Abdominal muscles

• Pectoral muscles

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

• To produce mucus

• To trap and remove particles from the air

• To absorb oxygen

• To exchange carbon dioxide

Which gas is primarily transported by hemoglobin in the blood?

• Nitrogen

• Oxygen

• Carbon dioxide

• Helium

Which of the following is NOT a function of the respiratory system?

• Regulation of blood pH

• Production of sound

• Absorption of nutrients

• Olfaction (sense of smell)

Which of the following structures allows air to pass from the nasal cavity to the larynx?

• Pharynx

• Epiglottis

• Bronchi

• Alveoli

The process of breathing in is called

• Expiration

• Inhalation

• Respiration

• Ventilation

What structure separates the thoracic cavity from the abdominal cavity?

• Pleura

• Diaphragm

• Intercostal muscles

• Mediastinum