lactic acid
only about one-third of the energy required by the muscle.
When a muscle is pushed to far with exertion, small tears can occur in the muscle tissue. The pain associated with this damage when the muscle is used is called a pulled muscle.
muscle size
The ending product of anaerobic respiration in muscle cells is lactic acid.
Threshod is the amount of force or exertion that a muscle or nerve cell can withstand at the peak of stimulation. Extending over a threshold can lead to cell over-exertion and possible damage to the internal structures.
True.
True
excessive muscle loss
a muscle strain
Increasing the amount of muscle you have will raise your metabolic rate. For example, if you add ten pounds of muscle in the next year through proper strength training your body will consume an additional 350 to 500 calories daily. Muscle is your metabolic furnace that burns additional calories 24 hours a day (not just during and immediately after exercise).
Occurs when acetylcholine (ACh) accumulates in the neuromuscular junction. It is called a tetanic contraction.
Muscle proteins are used to stimulate the growth of an exerted muscle. Even when the muscle isn't exerted it needs protein to repair and recover from the exertion previous but without exertion the muscle can no longer grow and will deplete This also applies when exerting a muscle with no protein intake (or very little). The muscle can no longer grow because the muscle has used all the stored muscle proteins for previous growth, as above once the original proteins are gone they must be replaced for extra or maintained mass.