• three factors which affect muscle tension in a whole muscle: in response to a single stimulus of adequate strength page 5 three phrases of a muscle twitch . Question 1: why does varying the stimulus strength affect the twitch force question 2: describe the effect of a mutation in initiation factor 3 would this be more or less detrimental than a mutation in release factor 1. How does increasing voltage above threshold stimulus affect force development see table 5: muscle length and contraction force see graph: effect of muscle fiber length on contraction force. Why does varying the stimulus strength affect the twitch force with stronger stimuli, more nerve fibers are stimulated and therefore more motor units are activated lab 5: muscles.
Why does varying the stimulus strength affect the twitch force feel any twitch response from the amplitude of 000ma to 65ma but to be close to accurate we located the twitch response by using the amplitude of 100ma. Why does varying the stimulus strength affect the twitch force fast-twitch fiber study force is the leading provider of online homework help for college and . How does increasing voltage above threshold stimulus affect force development the stimulus is measured in volts, and its role is to cause depolarization of the muscle fiber or the nerve a minimum voltage is needed in order to induce an action potential.
A varying the stimulus strength affects twitch force because it alters the amounts of calcium release which is responsible for force generated in a twitch contraction, a short burst of stimulation causes the muscle to contract, but the durati. Why does varying the stimulus strength affect the twitch force according to our data our volunteer experienced a twitch of 001 at 125 mv any other twitches experienced were also of 001 which would indicate that varying the stimulus strength does not necessarily affect the twitch force. As frequency increased, it was expected that the force of each twitch would build on each other and tetanus would occur instead, tension initially increased with increasing stimulus then.
Because muscle contractile properties determine the temporal summation of the twitch forces in response to each stimulation pulse (botterman et al, 1986 kernell et al, 1983), motor unit recruitment order may affect how the force-intensity relationship changes with stimulation frequency if motor units were recruited orderly with respect to . At what stimulus voltage does the masimal contraction occur (in other words: what is the maximal stimulus) if you increase the voltage at this point, will the contraction also increase definition it was 85 if you increase further, no, it will not increase the force of the reaction. 31 muscle force production and transmission by force levels higher than the maximal twitch force strength of the stimulus, the muscle force increases .
An increase in stimulus intensity is required to see the effect 24 skeletal muscle physiology force production on a tracing, the stimulus applied must have . Skeletal muscle practical questions- vanessa effect of stimulus frequency on contraction force quick and results in a decrease in force how does varying . The muscle twitch is a single response to a single stimulus (see figure 913 a) muscle twitches vary in length according to the type of muscle cells involved (see figure 913 b) fast twitch muscles such as those which move the eyeball have twitches which reach maximum contraction in 3 to 5 ms . What happens when you increase the stimulus amplitude of an action potential at first, i was thinking that an increase in stimulus amplitude would increase the frequency of ap firing,.
Normal muscle contraction is more sustained, and it can be modified by input from the nervous system to produce varying amounts of force this is called a graded muscle response the frequency of action potentials (nerve impulses) from a motor neuron and the number of motor neurons transmitting action potentials both affect the tension produced . Search results for 'why does varying the stimulus strength affect the twitch force' muscle contraction exercise 1: the effects of nerve stimulation objective: to explore the motor and sensory effects of electrical stimuli on a student volunteer, using the nerves of the. Exercise 5: muscle physiology i - electromyography produce more force slow twitch fibers are able to sustain a lower tension for longer of five clenches of .