The simple idea
Airflow follows the same rule as blood flow: flow = pressure difference ÷ resistance. Resistance rises steeply as the radius falls (roughly radius⁴, Concept 51) — halve the radius and resistance rises about 16‑fold.
Loading…
Part 6 · The Lungs and Breathing
Same concept, other depth: Clinical Reasoning →
Dear Doctor, shall we discuss & understand?
Sweet, clear and patient — like a friend who really wants you to get it. I believe in you — let's grow step by step.
Voice chat works best in Chrome or Edge — you can also read, listen and type below.
Airflow follows the same rule as blood flow: flow = pressure difference ÷ resistance. Resistance rises steeply as the radius falls (roughly radius⁴, Concept 51) — halve the radius and resistance rises about 16‑fold.
Loading the rest of this concept…
Talk it through with Dr. Amy
Dear Doctor, I'll teach a little, then listen to you — slowly, warmly, and at your pace.
Finished this one?
No test, no score — just a tick for you, kept on your own device.
Connected to this topic
Educational only — not a substitute for clinical judgement, supervision, or local guidelines.