GENERAL HISTOLOGY

Detailed explanation-1: -Final Answer: The muscles which are immune to fatigue are Cardiac muscles.

Detailed explanation-2: -Cardiac and muscle fatigue due to relative functional overload induced by excessive stimulation, hypersensitive excitation-contraction coupling, or diminished performance capacity correlates with sarcoplasmic reticulum failure.

Detailed explanation-3: -Solution : Cardiac muscles never get fatigued because cardiac muscle fibers are highly vascular surrounded by very rich capillary network, plenty of cytoplasm, mitochondria and rich in glycogen.

Detailed explanation-4: -Explanation: • Cardiac muscles are unconsciously controlled and continue to function even when they are not stimulated by a nerve impulse. • Although the cardiac muscle contracts quickly, it never becomes fatigued because it rests and works for the same amount of time.