wunder beta

📘 How lungs exchange oxygen

Trace alveoli, diffusion gradients, capillaries, hemoglobin, and carbon-dioxide removal.

lessons

~10 min

to learn

🔬 Science

subject

Adults

level

Start the course →

What you’ll learn

Airway
Alveolus
Gradient
Membrane
Hemoglobin
Perfusion
Surface area
Ventilation
Carbon dioxide
Limits

Questions this course answers

Where does pulmonary gas exchange occur?

Alveolar and capillary walls meet at the respiratory membrane.

What drives oxygen diffusion into blood?

Oxygen follows its partial-pressure gradient.

What is hemoglobin’s role?

Hemoglobin carries oxygen after it diffuses into blood.

Why are millions of alveoli useful?

Distributed sacs greatly increase total air-blood interface.

What happens to carbon dioxide in pulmonary capillaries?

Its gradient runs from venous blood into the alveolus.

Grounded in trusted sources

[object Object]
[object Object]
[object Object]
[object Object]

Every Wunder lesson is built from real, reputable sources — never invented.

Related Science courses

🫁Gas Exchange and Breathing 📘How the heart pumps blood 📘How kidneys filter blood 📘How digestion breaks down a meal 📘How vaccines train immune memory 📘How a fever changes body temperature 📘How skin heals a cut 📘How pain signals reach the brain

Wunder is a personalized learn-anything platform — tell it any topic and it builds a beautiful, fact-checked course in minutes, with narration, a knowledge check, and a college-style University track.

Browse more Science courses · All topics · Home