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Questions and Answers
What is incomplete tetanus?
What is incomplete tetanus?
- The degree of wave summation becomes less and less, resulting in no contraction
- When stimulation frequency continues to decrease
- The degree of wave summation becomes greater and greater, progressing to a sustained, but quivering contraction (correct)
- Muscle tension remains constant without any summation
What occurs during complete tetanus?
What occurs during complete tetanus?
Muscle tension increases to maximum tension with all contractions fusing into a smooth, sustained contraction
What is wave summation?
What is wave summation?
When the second twitch of a muscle is stronger than the first
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Study Notes
Incomplete Tetanus
- Characterized by increasing wave summation leading to greater tension.
- Results in a sustained contraction that appears quivering or oscillating.
- Key feature is the presence of relaxation periods between twitches.
Complete Tetanus
- Occurs when stimulation frequency is sufficiently high, preventing relaxation.
- Muscle tension reaches its maximum capacity with all individual contractions fusing together.
- Produces a smooth and sustained contraction, often associated with fatigue.
Wave Summation
- Defined as the phenomenon where the second muscle twitch is stronger than the first.
- Results from the increased frequency of stimuli before the muscle has fully relaxed.
- Essential for understanding muscle contraction dynamics and their efficiency in response to stimuli.
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