Question

b.Explain the effects of carbon dioxide on oxygen-carrying capacity of haemoglobin during strenuous exercise.

Answer 1

• When theuscles undergoes strenuous activity like exercise.
• The muscle cells increases the metobolic activity.
• This increase result in formation of waste products like Carbon dioxide as a byproduct.
• This accumulation of CO2 aso increases H+ ( HCO3- and H+ ).
• These increases the PCO2 and lower the pH of the blood that increases oxygen delivery to the active muscles.
• If muscles not receiving enough oxygen for cellular respiration , result in lactic acid fermentation , which releases lactic acid as a byproduct.
• This also increases the acidity of blood far more than CO2 alone.
• Which reflects the cells even greater need for oxygen.