Respiratory Structures
What is the actual site of gas exchange? (Consists of bronchioles, alveolar ducts & alveoli).
Respiratory Zone
What is the passageway for food & fluids only?
Esophagus
What TWO __________ separate the nasal cavity from the oral cavity?
Hard palate & soft palate
What is the substance that coats the alveolar membrane to promote efficient gas exchange?
Surfactant
What are the chambers where most gas exchange takes place?
Alveoli
What is the passageway for food, fluids & air?
Pharynx
Gas exchanges in the lungs occur by the process.
Diffusion
What causes inhaled air to swirl around the nasal cavity to trap debris in the nasal mucosa?
Nasal Conchae / Turbinates
What is the structure that forms the Adam's Apple?
Thyroid Cartilage
What structures rise up during swallowing to close off the nasopharynx and prevent food from entering it?
Uvula & Soft Palate
What is fluid between the pleural membranes that reduces friction due to lung movement?
Parietal / Serous Fluid
What is diminished by smoking?
Cilia
What is the membrane that directly lines the lung surface?
Visceral Pleura
What structure tips forward during swallowing to prevent to cover the tracheal opening and prevent food from entering it?
Epiglottis
How many lobes does each lung have?
Right: 3
Left: 2
Since coughing is essential for smoker's to remove mucus buildup in the lungs, what can they NEVER take?
Cough suppressant
What is the membrane that lines the thoracic cavity?
Parietal Pleura
Why should you NOT give fluids to a person who is unconcious?
They may aspirate the liquid into their lungs
What are the main TWO reasons tracheal rings are C shaped?
1. Keep airway open
2. Allow esophagus to expand
What consists of all passageways for air, purifies, humidifies, and warms incoming air?
Conducting Zone