15 Questions
What is the diffusion gradient, and how is it measured?
The diffusion gradient is the difference in partial pressure (concentration) from one side of a membrane to another, and it is measured in mmHg.
What is the primary factor that affects the amount of oxygen released from haemoglobin and entering the muscle cell during exercise?
The primary factor is the oxygen dissociation process, which is influenced by temperature, pCO2, and pH.
How does the production of lactic acid during exercise affect oxygen dissociation?
The production of lactic acid during exercise lowers the pH, which increases oxyhaemoglobin dissociation.
What happens to oxyhaemoglobin dissociation during recovery?
Oxyhaemoglobin dissociation gradually returns to resting levels during recovery.
What is the difference in partial pressure of oxygen between the blood and the muscle cell during rest?
The partial pressure of oxygen is 100 mmHg in the blood and 40 mmHg in the muscle cell during rest.
How does the increase in temperature during exercise affect oxygen dissociation?
The increase in temperature during exercise increases oxyhaemoglobin dissociation.
What is the effect of removing CO2 during recovery on oxyhaemoglobin dissociation?
Removing CO2 during recovery lowers pCO2, which decreases oxyhaemoglobin dissociation.
What is the role of the Bohr Shift in facilitating oxygen delivery to the muscle cell during exercise?
The Bohr Shift increases oxyhaemoglobin dissociation, allowing more oxygen to be released from haemoglobin and enter the muscle cell during exercise.
What is the term for the movement of gases from an area of high concentration to an area of low concentration?
Diffusion
What is the symbol used to represent the partial pressure of oxygen?
pO2
Where does internal gaseous exchange occur?
Blood capillaries and muscle cells
What happens to oxygen in the alveoli when there is a high partial pressure of oxygen?
Oxygen moves into the capillaries
How does the body's demand for oxygen affect breathing rate and depth during exercise?
The body's demand for oxygen is high, resulting in faster and deeper breathing
What is the result of a high partial pressure of carbon dioxide in the capillaries?
Carbon dioxide travels across the membrane wall to the alveoli
How does gaseous exchange change during exercise compared to rest?
Gaseous exchange increases during exercise
Test your knowledge of gaseous exchange and the respiratory system, including key terms like diffusion, partial pressure, and internal and external exchange. Learn about the movement of oxygen and carbon dioxide in the body.
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