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Actin and myosin are two fibers that cause contraction.
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∙ 8y ago
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What fibers cause a contraction in the ventricle?
Pirkinje Fibers
What does the sinoatrialnode release when it fires?
An action-potential which then travels to the Bundle of His and then the purkinje fibers to depolarize the ventricles to cause contraction.
Do muscles fibers stretch during contraction?
No, they contract.
Why does the amplitude of the EMG signal and the force of contraction increase?
does the amplitude of the EMG signal and the force of contraction increase because a finite number of fibers or are fiting more often, or becasue more fibers are recruited to fire as the intensity of signals in the motorneurons increase, or a combination of the two?
What is the type of contraction in which the muscle fibers produce increased tension but does not shorten?
An isometric contraction builds tension but there is no joint movement.
Network that stimulates the myocardium into contraction?
His bundle? or the Purkinje fibers?
The Ca2 that is required for sustained contraction of smooth muscle fibers comes mainly from the?
extracellular fluid surrounding the fibers
What is the maximum rate of contraction in normal cardiac muscle fibers?
What_is_the_maximum_rate_of_contraction_in_normal_cardiac_muscle_fibers
The ventricle contraction of the heart occurs iummediately after depolarization of the?
purkinje fibers
What is recruitment anatomy?
Increasing the number of muscle fibers involved in the contraction.
What is recruitment in anatomy?
Increasing the number of muscle fibers involved in the contraction.
What are muscles?
Muscles are tissues composed of fibers, the contraction of which produces movement in the body.
