Which of the following statements is False or incorrect?
A) Cardiac muscle contracts when stimulated by its own autorhythmic muscle cells.
B) Under normal resting conditions, cardiac muscle tissue contracts and relaxes about 75 times per minute.
C) Cardiac muscle fibers depend mostly on anaerobic cellular respiration to generate ATP.
D) Cardiac muscle fibers can use lactic acid to make ATP.

Question

Quizplus · Accepted Answer

Cardiac muscle fibers rely mostly on aerobic cellular respiration to generate ATP, as they contain numerous mitochondria to facilitate this process. While anaerobic respiration can occur in cardiac muscle fibers in times of extreme stress or oxygen deprivation, it is not the primary source of energy for these cells.

Which of the Following Statements Is False or Incorrect