2. When muscles are forced to contract against an immovable (heavy) load, the joint does not...

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2. When muscles are forced to contract against an immovable(heavy) load, the joint does not move. Imagine standing behind acar and trying to lift the back end off the ground with just yourarms.Â Â During such isometric musclecontractions, the small arteries that direct blood flow to themuscle are compressed.
Under such conditions, MAP rises rapidly (>150 mmHg) anddisproportionate to the mass of muscle recruited. Describe amechanism to explain how isometric contractions with a small musclegroup could produce such a large increase in MAP.
What would be a beneficial effect to the muscles of raising MAPto that extent?

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Ans no 2 a Isometric contraction involves steady or static contraction of a muscle without producing any movement in the joint During isometric contraction when smaller group of muscle contract the blood vessels also See Answer

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