A smooth, sustained contraction resulting from very rapid stimulation of the muscle, in which no evidence of relaxation is seen, is called:
a. A twitch
b. Temporal summation
c. Multiple motor unit summation
d. Fused tetanus

검증된 단계별 안내

Step 1: Understand the definitions of each term related to muscle contractions. A 'twitch' is a single, brief contraction and relaxation cycle in a muscle fiber following a single stimulus.

Step 2: Recognize that 'temporal summation' refers to the process where multiple stimuli occur in rapid succession, causing the muscle contractions to add together, but some relaxation still occurs between stimuli.

Step 3: Know that 'multiple motor unit summation' involves increasing the number of motor units activated to produce a stronger overall muscle contraction, but it does not describe the sustained contraction of a single fiber.

Step 4: Identify that 'fused tetanus' is a smooth, sustained muscle contraction resulting from very rapid stimulation where no relaxation is observed between stimuli, producing a continuous contraction.

Step 5: Based on these definitions, match the description of a smooth, sustained contraction with no relaxation to the correct term, which is 'fused tetanus'.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Muscle Twitch

A muscle twitch is the brief, single contraction and relaxation cycle of a muscle fiber in response to a single stimulus. It represents the simplest form of muscle contraction and is characterized by a quick rise and fall in tension.

Temporal Summation

Temporal summation occurs when a muscle is stimulated repeatedly at a frequency that allows the contractions to build on each other, increasing tension. However, some relaxation still occurs between stimuli, so the contraction is not completely smooth.

Fused Tetanus

Fused tetanus is a sustained muscle contraction resulting from very rapid stimulation where individual twitches merge, and no relaxation occurs between stimuli. This produces a smooth, continuous contraction with maximal tension.

A smooth, sustained contraction resulting from very rapid stimulation of the muscle, in which no evidence of relaxation is seen, is called:a. A twitchb. Temporal summationc. Multiple motor unit summationd. Fused tetanus