An isometric contraction is the kind of contraction that leads to development of tension but no increase in length.
An isometric contraction occurs as the muscle produces tension without changing the angle of a skeletal joint. Isometric contraction is a static muscle action that helps to maintain the posture. For example, the antigravity muscles. It occurs in the biceps when the arms may be holding a weight. In such a posture, the biceps enlarge due to holding of weight and produces tension but do no increase in length. It stops the flexion of elbow. In such contraction, no work is done, and lesser amount of heat energy is released in comparison to isotonic contractions.
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Answer: Status frustration can be defined as: “A feeling of frustration experienced by individuals when they are denied the opportunity of attaining social status.”
Explanation:
Answer: an adaptation to poverty.
Explanation:
Main Answer: an adaptation to poverty.
What is the relatively high incidence of expanded family households among poorer north americans?
The relatively high incidence of expanded family households among poorer north americans is an adaptation to poverty.
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