The architecture of the airway
The magic of the alveoli
The mechanics of the breath
Adapting to the extremes
The history of discovering respiration
YOUR GOAL
Master of How the lungs capture oxygen
artiteacher The mechanics of the breath
Take a breath and stretch it out, wide like a tennis court!
artiteacher Breathing out requires almost no muscular effort under normal conditions.
artiteacher Catch drifting oxygen molecules to learn how your lungs capture and deliver fresh air.
Sneeze speed: A sneeze can expel air and particles from your respiratory tract at speeds exceeding 100 miles per hour.
A dome-shaped muscular partition separating the thorax from the abdomen in mammals, which plays a major role in breathing. Its downward contraction expands the thoracic cavity, creating the negative pressure needed to draw in air.
What chemical change in the blood triggers the brain to increase your breathing rate?
Which part of the brainstem acts as the autopilot to control your breathing rate?
Which gas law explains how changing the chest's volume causes air to enter the lungs?
How far does the diaphragm typically move downward during a quiet, normal breath?