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?)

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 1 year ago

paragraph description of the ventilation without perfusion and 1 for perfusion without ventilation. What is occuring...

paragraph description of the ventilation without perfusion and 1 for perfusion without ventilation. What is occuring in deatils

2) What are ventilation and perfusion? Briefly explain how the process of ventilation-perfusion coupling is achieved

2) What are ventilation and perfusion? Briefly explain how the process of ventilation-perfusion coupling is achieved 3) Briefly describe the steps of normal quiet inspiration and expiration.

what is ventilation/perfusion mis-matching?

If a lung having a normal ventilation-perfusion ratio (=1) SUDDENLY develops ventilation-perfusion ratio <1, which...

If a lung having a normal ventilation-perfusion ratio (=1) SUDDENLY develops ventilation-perfusion ratio <1, which of the following will occur? Explain A decrease in arterial pO2 An increase in alveolar pO2 A decrease in cardiac output A decrease in arterial pCO2

long term goals Impaired physical mobility related to ventilation-perfusion

How does the lung maintain the Ventilation/Perfusion Ratio as close to 1 as possible?

Describe how gravity alters ventilation and especially perfusion in the lungs.

Explain the process of pulmonary ventilation. How do normal inspiration and expiration occur? Use the term...

Explain the process of pulmonary ventilation. How do normal inspiration and expiration occur? Use the term volume and pressure changes that occur and how they occur in your discussion.

How do the global and local reflexes address the optimization of the ventilation : perfusion ratio...

How do the global and local reflexes address the optimization of the ventilation : perfusion ratio (keeping it close to 1)?

1a) If the ventilation/perfusion ( V/Q) ratio of a lung region decreases, how will the PO2...

1a) If the ventilation/perfusion ( V/Q) ratio of a lung region decreases, how will the PO2 and PCO2 in the blood in that region change? 1b) In perfusion-limited O2 exchange, is the PO2 at the end of the pulmonary capillary closer to PA,O2 or PV,O2? 1c) Which of the following is/are higher at the base of the lung than at the apex: blood flow, V/Q, ventilation, PO2, PCO2? Please explain your answers briefly and accurately.

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