Decreasing surface area decrease rate of diffusion.
- As Surface area increase, the volume increases faster, so much so that the surface area available to allow substances in halves each time the cell volume doubles.
What is diffusion in the lungs?
- Diffusion in lungs refers to how well the alveoli, or air sacs in the lungs, are delivering oxygen to and removing carbon dioxide from the blood in the capillaries that surround them.
- Rate of diffusion is faster when the membrane is thinner.
What are the functions of lungs?
- Gas Exchange – oxygen and carbon dioxide.
- Breathing – movement of air.
- Sound Production.
- Olfactory Assistance – sense of smell.
- Protection from dust and microbes entering body through mucus production, cilia, and coughing.
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