MUSCLE
SKELETAL MUSCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Trinity is trying with all his might to pull a tree stump out of the ground. It does not budge. Which type of contraction are his muscles undergoing?
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simple contractions
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Isotonic contractions
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Isometric contractions
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no contractions taking place
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Explanation:
Detailed explanation-1: -Examples of isotonic exercise include stair climbing, bicep curls, push-ups and squats. Isometric Contractions: The force during isometric contractions is produced without change in the length of the muscle. The muscle itself does not change in length while the tension never exceeds the opposing force.
Detailed explanation-2: -Isometric contraction: A muscle contracts, but the joint it controls does not move. Think of holding a weight with your elbow bent to 90 degrees and does not move. Isotonic contraction: A muscle contracts and the joint angle it controls increases and decreases while the muscle either shortens or lengthens.
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