Diffusion of O2 and CO2 occurs at the alveoli in the lungs.
by diffusion across a capillary wall
yes
Respiratory System
the respiratory system
Respiratory system
by diffusion across a capillary wall
by diffusion across a capillary wall
diffusion
in the lungs
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hydra has no specialized respiratory organs and exchanges of gases take place via simple diffusion from surface lining of the enteron on so in this way the surface lining of enteron acts as an efficient respiratory surface
Gas exchange occurs in the alveoli in the respiratory system. The thin-walled structures allow diffusion of gases into and out of the capillaries.
The respiratory system is the anatomical system of an organism that introduces respiratory gases to the interior and performs gas exchange. In humans and other mammals, the anatomical features of the respiratory system include airways, lungs, and the respiratory muscles. Molecules of oxygen and carbon dioxide are passively exchanged, by diffusion, between the gaseous external environment and the blood.
By diffusion across q capillary wall
By diffusion across a capillary wall.
Flat worms do not have blood. There fore, they do not require a respiratory system to infuse fresh oxygen into the blood. This lack of a respiratory system, means they do not have lungs.
Pneumonia can reduce the ability of the lungs to allow oxygen diffusion across the alveoli if accumulations of pus (exudate) or fluids block significant portions of the lungs.