Peak Performance - Gas exchange - Diffusion of O2 into the tissue fluid
3 important questions on Peak Performance - Gas exchange - Diffusion of O2 into the tissue fluid
Why is there normally a one diffusion pathway of oxygen into the tissue fluid?
Because cells are constantly metabolising oxygen, and so the pO2 in the tissue fluid will always be less than that in the capillaries.
What is the upper limit of the pO2 of the tissue fluid?
95mmHg- as this is the maximum pO2 in the arteries.
What determines the pO2 in the tissue?
1. The rate at which oxygen is transported in the blood - during exercise, blood is carried around the body faster and so the rate at which oxygen is transported around the body increases.
2. The rate at which oxygen is being used up by the tissue.
2. The rate at which oxygen is being used up by the tissue.
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