Normal cardiac muscle is similar to normal skeletal muscle in terms of
A) the duration of the action potentials, which last 250-300 msec.
B) the duration of the resulting contractions.
C) the refractory period, which continues until relaxation is under way.
D) the appearance of calcium among the myofibrils.
E) the appearance of summation of twitches.
Correct Answer:
Verified
Q78: Abnormal patterns of cardiac activity are known
Q79: The T wave of an ECG corresponds
Q80: Q81: Which event marks the beginning of the Q82: During ventricular systole, Q84: The amount of blood pumped by the Q85: When a chamber fills with blood and Q86: Which of the following is true regarding Q87: Which of the following is greatest during Q88: Relaxation of the heart chambers is called
A) the ventricles are relaxed.
B)
A)
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