acid-base 2

Which of the following sports pose the most significant risk of acid-base disturbances?

• Baseball

• 100-meter sprint

• 800-meter run

• Marathon run

A buffer resists pH change by removing H+ when the H+ concentration falls and releasing the H+ when the H+ concentration increases.

• True

• False

Which of the following is NOT an extracellular buffer system?

• Bicarbonate

• Phosphate groups

• Haemoglobin

• Blood proteins

An increase in blood PCO2 lower pH, whereas a decrease in blood PCO2 increases pH.

• True

• False

Which is the second line of defence against pH shift during exercise?

• bicarbonate buffers

• blood proteins

• phosphate buffer

• respiratory compensation