Hydrogen ions interfere with the ability of the sarcoplasmic reticulum to release calcium. Given this information, what effect do you think a decrease in pH would have on the force of muscle contraction?
A) decreased force of contraction
B) increased force of contraction
C) no effect on force of contraction
D) no contraction

Question

Quizplus · Accepted Answer

Hydrogen ions interfere with the ability of the sarcoplasmic reticulum to release calcium, which is essential for muscle contraction. Therefore, if the pH decreases, the concentration of hydrogen ions increases, interfering more with the release of calcium and thus causing a decreased force of muscle contraction.

Hydrogen Ions Interfere with the Ability of the Sarcoplasmic Reticulum