Anatomy & Functions
While the primary function of the respiratory system is gas exchange, it serves this critical secondary function to preserve normal cellular metabolism throughout the body.
What is maintaining Acid-Base Balance?
This phospholipid substance, produced by Type II alveolar cells, lowers surface tension to prevent the alveoli from collapsing during expiration.
What is Surfactant?
This acute infectious disease causes inflammation of the lung parenchyma and can be classified as community-acquired (CAP) or hospital-acquired (HAP).
What is Pneumonia?
This chronic obstructive disorder is characterized by hyperreactive airways, reversible bronchospasm, and an IgE-mediated inflammatory response.
What is Asthma?
This life-threatening condition occurs when a detached blood clot, typically originating from a deep vein thrombosis (DVT) in the leg, blocks a pulmonary artery.
What is a Pulmonary Embolism (PE)?
Known colloquially as the "voice box," this structure contains the glottis and serves as the fundamental defense mechanism for coughing.
What is the Larynx?
This clinical descriptor represents the ease with which the lungs and thoracic wall can expand during ventilation.
What is Lung Compliance?
This chronic, airborne bacterial infection forms distinct Ghon complexes (granulomas) within the lung tissue.
What is Tuberculosis (TB)?
Patients presenting with this specific type of COPD are often nicknamed "pink puffers" due to alveolar destruction, air trapping, and a barrel chest appearance without severe cyanosis.
What is Emphysema?
This diagnostic term describes an abnormal accumulation of fluid within the pleural space, which can suppress lung expansion.
What is a Pleural Effusion?
Due to its shorter, wider, and more vertical anatomical structure, aspirated foreign objects are most likely to lodge in this specific bronchus.
What is the Right Primary Bronchus?
This diagnostic test evaluates lung volume, capacity, and flow rates to distinguish between obstructive and restrictive airway patterns.
What are Pulmonary Function Tests (PFTs)?
This screening assessment detects an immune response to Mycobacterium tuberculosis by measuring an induration on the skin 48 to 72 hours later.
What is the Mantoux Tuberculin Skin Test (or PPD)?
Clinically defined by a chronic productive cough lasting for at least 3 consecutive months over 2 successive years, this condition earns the moniker "blue bloaters."
What is Chronic Bronchitis?
This specific injury describes an entry of air into the pleural space, destroying negative pressure and causing partial or complete lung collapse.
What is a Pneumothorax?
These specialized cellular structures line the respiratory tract and act as a microscopic escalator to propel trapped debris upward toward the pharynx.
What are Cilia?
This specific metric measures the volume of air inspired or expired during a single, normal, resting breath.
What is Tidal Volume (VT)?
To confirm a definitive diagnosis of active Tuberculosis, the clinician must obtain this type of laboratory sample over three consecutive mornings.
What is an Acid-Fast Bacilli (AFB) Sputum Culture?
This medical emergency occurs when a severe, prolonged asthma attack fails to respond to standard bronchodilator therapies.
What is Status Asthmaticus?
This severe, life-threatening emergency occurs when an intrapleural air leak creates a one-way valve, building high tension that shifts the mediastinum and compresses the heart.
What is a Tension Pneumothorax?
These specific terminal structures within the lungs serve as the actual, microscopic site where gas exchange occurs.
What are the Alveoli?
This neurological center, located within the brainstem, controls involuntary, rhythmic breathing patterns.
What is the Medulla Oblongata (or Respiratory Center)?
This dangerous, infectious consolidation pattern can occur in severe pneumonia when inflammatory exudate fills the alveoli, preventing proper ventilation.
What is Hepatization (Red or Gray Hepatization)?
To maximize expiratory flow and prevent premature airway collapse, a nurse should teach a COPD patient this specific breathing technique.
What is Pursed-Lip Breathing?
This severe complication describes right-sided heart hypertrophy and failure brought on specifically by chronic pulmonary hypertension.
What is Cor Pulmonale?