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Fatigue Definition Anatomy

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Causes of musle fatigue problems of excitation at the neuromuscular junction insufficient free ca2 at neuromuscular junction. Physiology a condition of the muscle in which its capacity to produce maximum voluntary action or to perform a series of repetitive actions is reduced.

Heat Stroke Vs Heat Exhaustion Differences And Treatment

Feelings of fatigue may also stem from pain anxiety fear or boredom.

Fatigue definition anatomy. It may be a symptom of one of many medical conditions if it prolonged severe progressive or occurs without provocation. Muscle fatigue and oxygen deficit. When it is not relieved by rest it may have a more serious origin.

Start studying human anatomy chapter 6. There may be other associated symptoms related to the underlying cause of the chronic fatigue. Fatigue is a normal reaction to intense physical exertion emotional strain or lack of rest.

It may be sudden or gradual in onset. Synaptic fatigue or short term synaptic depression is an activity dependent form of short term synaptic plasticity that results in the temporary inability of neurons to fire and therefore transmit an input signal. It may be a symptom of poor physical condition a specific disease or oncoming disease or severe emotional stress.

Contraction doesnt always shorten a muscle. Such feelings may be generated by muscular effort. Contraction produces tension the force exerted on the load or object to be moved.

Muscle fatigue defined as the reduced ability to produce muscle tension caused by a decrease in glycogen stores primary cause during excessive exercise. Fatigue is a symptom of another disease or condition. Same principles apply to contraction of a single fiber and a whole muscle.

The fatigue may be partial or complete. It is a normal phenomenon if it follows prolonged physical or mental activity and resolves completely with rest. Impairment of muscle force production or of shortening speed resulting from repeated andor prolonged activity.

The reduced capacity of a muscle to perform work as a result of repeated contractions and accumulation of lactic acid in anaerobic cell respiration. Fatigue is a subjective feeling of tiredness. Force of duration of contraction vary in response to stimuli of different frequencies and intensities.

It results when muscle activity exceeds tissue substrate and oxygenation capacity. Learn vocabulary terms and more with flashcards games and other study tools. Mental fatigue is a transien.

A person who has fatigue feels weak is constantly tired and lacks energy. Fatigue specific form of human inadequacy in which the individual experiences an aversion to exertion and feels unable to carry on. Physical fatigue is the transient inability of muscles to maintain optimal physical performance and is made more severe by intense physical exercise.

Sometimes fatigue is psychological in origin. Exhaustion of the energy supply to the muscles of the body however is not an invariable precursor.

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