Respiratory System Visual Study Guide
How to use this: Study the blue “must know” boxes first, then use the comparison tables to separate similar diagnoses on an exam. Focus on assessment
findings + diagnostic clues, not memorizing paragraphs.
Big picture Exam priority
Respiratory assessment links anatomy, symptoms, exam findings, and diagnostics. Auscultation is the most important technique for assessing airflow through the
Match the complaint to the likely structure involved. tracheobronchial tree.
Safety cue Exam clue
Cyanosis is a late sign of hypoxemia. New respiratory distress, stridor, or tracheal Normal CXR + unexplained hypoxia should make pulmonary embolism part of the
deviation needs urgent attention. differential.
One-page exam map
Question on exam Think through this pathway High-yield clue
Upper airway vs lower airway vs pleura vs vascular vs Pleuritic pain = parietal pleura irritation; lung tissue
What system? cardiac overlap itself has no pain fibers.
Cough, sputum, dyspnea, chest pain, abnormal
What symptom? respiratory rate Always compare severity with the patient’s baseline.
Side-to-side comparison matters more than isolated
What exam finding? Inspect -> palpate -> percuss -> auscultate findings.
CXR, CT/CTA, PFT, ABG, labs based on suspected PFTs are key for obstructive disease; CTA/VQ for PE;
What diagnostic? disorder CXR for pneumonia/PTX/effusion.
Advanced Assessment Respiratory Visual Study Guide | Created from uploaded lecture transcript and PowerPoint
, 1. Anatomy & physiology: what to picture
Upper respiratory tract: Nose and pharynx.
Lower respiratory tract: Larynx, trachea, bronchi, bronchioles, and lungs.
Right main bronchus: Shorter and more vertical, so aspiration commonly
affects the right middle/lower lobes.
Pleura: Visceral pleura covers lungs; parietal pleura lines rib cage and
diaphragm. Fluid helps lung expansion.
Costodiaphragmatic recess: Potential space below lung level. Fluid
collection can compromise expansion, such as pleural effusion.
Respiration cycle
Phase What happens Why it matters
O2 enters lungs -> blood -> heart -> systemic
Inhalation/O2 delivery Supports cellular respiration and energy production.
circulation -> cells.
CO2 leaves cells -> systemic circulation -> heart ->
CO2 return/exhalation Removes waste CO2 and supports acid-base balance.
lungs -> exhaled.
Advanced Assessment Respiratory Visual Study Guide | Created from uploaded lecture transcript and PowerPoint