Anatomy
·Thorax & Spine
Lungs (Lobes & Fissures)
⭐ PREMIUM
The right lung has 3 lobes, the left 2 (+ lingula). Fissure surface markings are commonly asked.
LOBES & FISSURES
• Right: upper, middle, lower lobes; oblique + horizontal fissures.
• Left: upper (with lingula) + lower lobes; oblique fissure only; cardiac notch + lingula (homologue of the right middle lobe).
SURFACE MARKINGS — high-yield
• Oblique fissure: spine of T2/T3 → 6th costal cartila…
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