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A rapid repetitive series of threshold stimuli leading to a single fused sustained contraction is A summation of stimuli B treppe C tetanus D sumation of contraction?
a. summation of stimuli
When does wave summation occurs?
Wave summation occurs when a muscle is stimulated rapidly enough that it does not have time to completely relax between stimuli, causing the contractions to combine or "summate" to produce a stronger muscle contraction. This phenomenon can occur during repetitive or sustained muscle activity, leading to increased muscle force production.
What voltage produced maximal contraction of the muscle?
The voltage that produces maximal contraction of a muscle is called the maximal stimulus voltage. This voltage is typically higher than the threshold voltage required to elicit a muscle contraction and ensures that all muscle fibers within a motor unit are stimulated to contract simultaneously, leading to a stronger contraction.
Skeletal muscle twitch differs from a tetanic contraction in that?
Skeletal muscle twitch is a single, brief contraction and relaxation cycle, whereas a tetanic contraction involves sustained, rapid repeated contractions without relaxation in between. Tetanic contractions occur when the muscle is stimulated at a high frequency, leading to a fused contraction.
Some muscle fibers always contracted?
Summation and/or tetanic contraction. Summation is increased muscle contraction until maximal sustained contraction is achieved. Tetanic contraction is sustained muscle contraction without relaxation. If you're inquiring for the Learning Objective Review in an anatomy and physiology course, the question refers to a condition in which some fibers are always contracted... so I'm not sure if they're looking for summation or tetanic contraction - but I think it would be tetanic contraction as summation is more the process leading up to the tetanic contraction...
How does fusion frequency relate to tetanus?
The fusion frequency is the minimum stimulus required to elicit tetanus in a muscle. For example, the fusion frequency can be given in terms of volts (V), or it can be given in terms of whatever units by which the applied stimuli are being measured.
What are the 3 methods of leading while shooting shotguns?
Sustained, catch up, point
What is it called when materials shrink as they cool?
This phenomenon is called thermal contraction or simply contraction. When materials cool, the decrease in temperature causes the atoms and molecules to slow down, leading to a decrease in volume and a contraction of the material.
What is the medical term meaning repetitive pharyngeal collapse leading to absence of breathing?
Obstructive Sleep Apnea (OSA)
What is the definition of repetitive strain injury and how can it be prevented?
Repetitive strain injury (RSI) is a condition caused by repetitive movements or overuse of muscles and tendons, leading to pain and discomfort. It can be prevented by taking breaks, using ergonomic equipment, maintaining good posture, and practicing proper stretching and strengthening exercises.
What occurs when intracellular calcium levels are high?
High intracellular calcium levels can lead to muscle contraction, neurotransmitter release, activation of enzymes, and gene expression. However, sustained high levels of calcium can also be toxic to the cell, leading to cellular damage and eventually cell death.
Annie Oakley feminist of 1970 why did she compere housework to an assembly line?
The comparison was due to the repetitive, isolated tasks, leading to alienation.
