Fatigue Definition Anatomy

Fatigue is a symptom of another disease or condition. Impairment of muscle force production or of shortening speed resulting from repeated andor prolonged activity.

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The fatigue may be partial or complete.

Fatigue definition anatomy. Contraction produces tension the force exerted on the load or object to be moved. Physical fatigue is the transient inability of muscles to maintain optimal physical performance and is made more severe by intense physical exercise. Same principles apply to contraction of a single fiber and a whole muscle.

Fatigue is a normal reaction to intense physical exertion emotional strain or lack of rest. Exhaustion of the energy supply to the muscles of the body however is not an invariable precursor. It may be a symptom of poor physical condition a specific disease or oncoming disease or severe emotional stress.

Sometimes fatigue is psychological in origin. Muscle fatigue defined as the reduced ability to produce muscle tension caused by a decrease in glycogen stores primary cause during excessive exercise. Mental fatigue is a transien.

A person who has fatigue feels weak is constantly tired and lacks energy. It is a normal phenomenon if it follows prolonged physical or mental activity and resolves completely with rest. Causes of musle fatigue problems of excitation at the neuromuscular junction insufficient free ca2 at neuromuscular junction.

Such feelings may be generated by muscular effort. Muscle fatigue and oxygen deficit. Start studying human anatomy chapter 6.

Fatigue specific form of human inadequacy in which the individual experiences an aversion to exertion and feels unable to carry on. 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 one of many medical conditions if it prolonged severe progressive or occurs without provocation.

Contraction doesnt always shorten a muscle. There may be other associated symptoms related to the underlying cause of the chronic fatigue. When it is not relieved by rest it may have a more serious origin.

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. It results when muscle activity exceeds tissue substrate and oxygenation capacity.

Feelings of fatigue may also stem from pain anxiety fear or boredom. 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. Learn vocabulary terms and more with flashcards games and other study tools.

It may be sudden or gradual in onset. Force of duration of contraction vary in response to stimuli of different frequencies and intensities.

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