When a second stimulus arrives before the first twitch is complete a more powerful contraction occurs?

When a second stimulus arrives before the first twitch is complete a more powerful contraction occurs?

When a second stimulus arrives before the first twitch is complete, a more powerful contraction occurs….

Latin/Greek Root	Meaning	Example
Cata-	Down	Catabolic
Endo-	Inside	Endomysium

What is it called when a second stimulus arrives before the first twitch is complete?

During twitch summation (aka temporal or wave summation) a second stimulus arrives at the muscle before complete relaxation of the first contraction, causing the second contraction to have greater tension than the first one.

What is the second phase of muscle contraction?

The contraction phase is when the muscle is generating tension and is associated with cycling of the cross bridges, and the relaxation phase is the time for the muscle to return to its normal length.

What is the stimulus for contraction?

For a contraction to occur there must first be a stimulation of the muscle in the form of an impulse (action potential) from a motor neuron (nerve that connects to muscle). Note that one motor neuron does not stimulate the entire muscle but only a number of muscle fibres within a muscle.

Does the latent period change with different stimulus?

No, the duration of the latent period does not vary with variations in the stimulus voltage. The results matched with the prediction and the latent period remained constant.

Does the latent period change with changing stimulus voltage?

The latent period did not change with changes in stimulus voltage.

What is the first phase of muscle contraction?

The first phase is the latent period, during which the action potential is being propagated along the sarcolemma and Ca++ ions are released from the sarcoplasmic reticulum. This is the phase during which excitation and contraction are being coupled but contraction has yet to occur.

What stimulates a muscle contraction?

1. A Muscle Contraction Is Triggered When an Action Potential Travels Along the Nerves to the Muscles. Muscle contraction begins when the nervous system generates a signal. The signal, an impulse called an action potential, travels through a type of nerve cell called a motor neuron.

Does the duration of the latent period change with different stimulus voltages How well did the result compare with your prediction?

Does the duration of the latent period change with different stimulus voltages? No the latent period did not change when diferent voltage of stimulus was applied.

Will changes to the stimulus voltage alter the duration of latent period?

Will changes to the stimulus voltage alter the duration of the latent period? No, changes to the stimulus intensity will not change the duration of the latent period. The latent period is a chemical event initiated by the stimulus regardless of its intensity.

What happens to the latent period when the stimulus voltage increases?

When does a second stimulus arrive before the relaxation phase?

If a second stimulus arrives before the relaxation phase has ended, a second, more powerful contraction occurs. This is called A) incomplete tetanus. B) complete tetanus. C) treppe. D) wave summation.

Which is a contraction represented by a single stimulus?

The type of contraction represented by a single stimulus/contraction/relaxation sequence is a A) twitch. B) incomplete tetanus. C) complete tetanus. D) summation. E) incomplete summation. A If a second stimulus arrives before the relaxation phase has ended, a second, more powerful contraction occurs.

Which is muscle contraction produces increased tension but does not shorten?

E The type of contraction in which the muscle fibers produce increased tension but do not shorten is called A) tetany. B) treppe. C) concentric. D) isotonic.

What do you call an increase in muscle tension?

The increase in muscle tension that is produced by increasing the number of active motor units is called A) incomplete tetanus. B) complete tetanus. C) treppe. D) wave summation. E) recruitment. E The type of contraction in which the muscle fibers produce increased tension but do not shorten is called A) tetany. B) treppe. C) concentric.