A) quickly and they fatigue
B) quickly and unfatigued
C) slowly and are not fatigued
D) slowly and they fatigue
Correct Answer: B
Solution :
Cardiac muscles are found in the wall of heart and large veins (where these enter the heart). The cardiac muscles contract rapidly and never get fatigued. The skeletal muscles also have rapid contraction but soon get fatigued. The smooth muscles contract slowly and do not get fatigued.
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