the heart has to be able to regulate its contractions. heart muscle, unlike skeletal muscle, cannot go into a tetanus. this is because

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31-10-2022
Biology

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the heart has to be able to regulate its contractions. heart muscle, unlike skeletal muscle, cannot go into a tetanus. this is because

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ArunVenu252 ArunVenu252 · Answer 1 · 2022-11-02T16:02:24-04:00

Compared to skeletal muscle fibres, cardiac muscle cell membranes have different characteristics. Because of this, heart muscle tissue is immune to tetanus (sustained contraction). Due to the inability of a heart in tetany to pump blood, this characteristic is crucial.

Why does heart muscle not get tetanus?

Cardiovascular muscle has a significantly longer refractory time than skeletal muscle. As a result, tetanus is avoided, and each contraction is followed by enough time for the heart chamber to fill back up with blood before the subsequent contraction.

Tetanus toxin (also known as tetanospasmin), which is generated by the anaerobic bacterium Clostridium tetani and causes infection by contaminating wounds, is what causes the stiffness and spasms of the muscles.

Cardiac muscle contracts rhythmically and is not controlled voluntarily, which sets it apart from skeletal muscle. The heart's sinoatrial node, which functions as the pacemaker for the heart, controls the rhythmic contraction of cardiac muscle.

Learn more about Cardiovascular muscle refer

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