[01] Anatomy of the Respiratory System Flashcards
What are the major components of the respiratory system?
- Nasal cavity
- Pharynx
- Larynx
- Trachea
- Bronchi
- Lungs
What is the function of the nasal cavity in the respiratory system?
To filter, warm, and humidify incoming air
What is the function of the pharynx in the respiratory system?
It serves as a passageway for air and food
What is the function of the larynx in the respiratory system?
It protects the trachea and houses the vocal cords
What is the function of the trachea in the respiratory system?
It serves as a passageway for air to the bronchi
What is the function of the bronchi in the respiratory system?
They distribute air to each lung
What are the lungs’ main function in the respiratory system?
They facilitate gas exchange between the air and the blood
What structures within the lungs facilitate gas exchange?
Alveoli
What is the role of the diaphragm in the respiratory system?
It contracts and relaxes to facilitate breathing
What happens to the chest cavity and lungs when the diaphragm contracts?
The chest cavity expands and the lungs fill with air (inhalation)
What happens to the chest cavity and lungs when the diaphragm relaxes?
The chest cavity decreases in size and air is expelled from the lungs (exhalation)
What separates the upper and lower respiratory tract?
The larynx
What structures are part of the upper respiratory tract?
- Nasal cavity
- Pharynx
- Larynx
What structures are part of the lower respiratory tract?
- Trachea
- Bronchi
- Lungs
What are bronchioles?
Small branches of the bronchi within the lungs
