Contraction elicited by a single brief stimulus is called:
a. A twitch
b. Temporal summation
c. Multiple motor unit summation
d. Fused tetanus

검증된 단계별 안내

Step 1: Understand the terminology related to muscle contractions. A 'twitch' is the response of a muscle to a single brief stimulus, resulting in a quick contraction and relaxation.

Step 2: Review the other options to differentiate them: 'Temporal summation' refers to multiple stimuli in rapid succession causing increased contraction strength; 'Multiple motor unit summation' involves recruiting more motor units to increase contraction force; 'Fused tetanus' is a sustained contraction with no relaxation due to very rapid stimuli.

Step 3: Identify that the question asks specifically for the contraction caused by a single brief stimulus, which matches the definition of a 'twitch'.

Step 4: Confirm that the other options involve multiple stimuli or motor units, which do not fit the description of a single brief stimulus contraction.

Step 5: Conclude that the correct term for contraction elicited by a single brief stimulus is 'a twitch'.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

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주요 개념

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

Muscle Twitch

A muscle twitch is the brief contraction of muscle fibers in response to a single, quick stimulus. It consists of three phases: latent, contraction, and relaxation. This basic unit of muscle contraction helps in understanding how muscles respond to neural signals.

Temporal Summation

Temporal summation occurs when multiple stimuli are delivered in rapid succession to a muscle, causing the contractions to add up and produce a stronger overall contraction. It explains how muscle tension increases with stimulus frequency.

Multiple Motor Unit Summation

Multiple motor unit summation refers to the recruitment of additional motor units to increase muscle contraction strength. This process allows for graded control of muscle force by activating more muscle fibers as needed.

Contraction elicited by a single brief stimulus is called:a. A twitchb. Temporal summationc. Multiple motor unit summationd. Fused tetanus