The Respiratory System

The video explores the respiratory system, highlighting its role in oxygenating the body and expelling carbon dioxide. It covers the anatomy of the system, including the nose, nasal cavity, larynx, trachea, bronchi, and alveoli. The process of pulmonary ventilation and gas exchange is explained, detailing how oxygen enters the bloodstream and carbon dioxide is expelled. The structure and function of the lungs are discussed, emphasizing the mechanics of breathing and the role of the diaphragm and intercostal muscles.

What is the primary function of the respiratory system?

• To produce hormones

• To circulate blood

• To supply oxygen and expel carbon dioxide

• To digest food

Which part of the respiratory system is responsible for filtering, heating, and moistening the air?

• Trachea

• Nasal cavity

• Bronchi

• Larynx

What are the two zones of the respiratory system?

• Conducting and respiratory zones

• Upper and lower zones

• Primary and secondary zones

• Internal and external zones

Where does gas exchange primarily occur in the respiratory system?

• In the trachea

• In the alveoli

• In the bronchi

• In the nasal cavity

What is the role of the diaphragm in breathing?

• To protect the lungs

• To filter air

• To produce sound

• To change lung volume and pressure

How many lobes does the right lung have?

• Four

• One

• Three

• Two

What keeps the lungs open by maintaining negative pressure?

• Intrapulmonary pressure

• Intrapleural pressure

• Atmospheric pressure

• Blood pressure