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Length contraction...

Length contraction

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Diaphragm contracts to help in "_____________" while the contraction of abdominal muscles helps in "_____________" .

Diaphragm contracts to help in ..................... while the contraction of abdominal muscles helps in....................

Isotonic contraction and isometric contraction

What happens to the l band and H zone during contraction? Do the lengths of the thick and thin filaments change ?

Assertion: Vigorous contraction of the uterus at the end of pregnancy causes expulsion. Reason: The stimulatory reflex between the uterine contraction and oxytocin secretion results in weakening contractions.

During isovolumetric contraction of ventricles

During contraction of muscles :-

The functional unit of contraction is :-

If a small load is attached to a muscle that is then tetanically stimulated, the muscle will lift the load in an isotonic contraction over a certain distance and then stop shortening and enter a state of isometric contraction. If a heavier load is used, the distance shortened before entering an isometric contraction is shorter. Explain these shortening limits in terms of the sliding filament model of contraction and the length-tension relation.

Assertion : The contraction and relaxation of muscle fiber are controlled by nerve impulses. Reason : The threshold stimulus is the minimum stimulus required for the beginning of contraction.