0
Why does repetitive nerve stimulation result in decreased amplitude of the muscle contraction?
The destruction of ACh receptors makes skeletal muscle less responsive to nerve stimulation and more likely to prematurely fatigue. With fewer ACh receptors available to bind to ACh, the skeletal muscle cell membrane potentials have a more difficult time reaching the threshold potential and initiating contraction. Thus, the normal degree of fatigue noted during repetitive nerve stimulation is exacerbated in an individual with myasthenia gravis.
What else can I help you with?
What is a heartbeat affected by?
The individual heartbeat, or contraction, can be modified by input from the sympathetic and parasympathetic nervous systems. This modification can include increased or decreased contraction ratios, increased or decreased stroke volume and increased or decreased rate of contraction.
Is heartbeat affected by heartbeat?
The individual heartbeat, or contraction, can be modified by input from the sympathetic and parasympathetic nervous systems. This modification can include increased or decreased contraction ratios, increased or decreased stroke volume and increased or decreased rate of contraction.
Which part of the wave is changed when there is interference?
The amplitude of the wave is changed when there is interference, resulting in either constructive interference (increased amplitude) or destructive interference (decreased amplitude).
What is the effect of sympathetic stimulation on the rectum?
Sympathetic stimulation causes relaxation of the rectum's smooth muscle, leading to decreased motility and tone. This can result in decreased urgency and the ability to retain feces.
Why does the force of a muscle decrease over time during uninterrupted stimulation?
The muscle is said to undergo Fatigue.
Physical evidence that supports the sliding filament theory of muscle contraction includes?
decreased width of the H band during contraction
Does the intensity of a wave increases when its amplitude decrease?
Intensity of a wave is proportional to the square of its amlitude so it should decrese when the amplitude is decreased.
Gradual reduction of strength of a response due to repetitive stimulation?
This phenomenon is known as habituation. It occurs when repeated exposure to a stimulus leads to a decreased response over time. Habituation helps organisms filter out non-threatening or irrelevant stimuli to focus on more important information.
How did the frequency of stimulation affect the amount of force generated by the isolated skeletal muscle when the frequency of stimulation was increased such that the muscle twitches did not fully re?
Decreased force production
When you turn down the volume what happens to the sound waves' amplitude?
Intensity of sound is dealt as volume in case of radio sets. Intensity is directly proportional to the square of amplitude. So as volume is turned down, intensity is reduced and so the amplitude is decreased.
What happens to a vibration when amplitude is changed?
as the amplitude increases the waves get closer together like an accordion being squeezed...so the vibrations become faster (or higher pitched if we're talking about sound) if the amplitude is decreased the waves spread out and the vibration is slower and lower in pitch
What happens when you decrease amplitude Of a wave?
When the amplitude of a wave is decreased, the wave becomes less intense and has lower energy. This means that the wave will appear smaller in magnitude and may have a quieter or weaker effect on its surroundings. Furthermore, decreasing the amplitude can also affect the frequency and wavelength of the wave.
