1. How are ventilation and perfusion matched in animals? What short-term changes occur to balance these...

1. How are ventilation and perfusion matched in animals? What short-term changes occur to balance these two components?

2. Diagram the negative feedback loop for the homeostatic regulation of blood PO2; identify the sensors, integrators, and effectors in this system.

3. What are the critical modulators of respiration in water and air breathing animals? (i.e. what respiratory gas has primary influence on ventilation?)

Solutions

Expert Solution

question 1 Answer: The blood supply to lungs and exchange of gasses like oxygen and carbon dioxide help to carry out external respiration. if there is change in ventilation and perfusion indicates disease or disorder of respiratory system. So, to overcome the imbalance in ventilation and perfusion can correct the factors such as capillary blood flow which is directly connected to air flow in respiratory system.

E.g. In the case of asthma the condition of decreased PAO2 due to decreased air flow in the lungs and which can be corrected by perfusion in the capillaries adjusts to change in PAO2 level.

Question 3 Answer :the modulators like gills, trachea and lungs performing the function.

Sydney Mullin answered 6 months ago

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