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weqwewe [10]
2 years ago
15

Cardiac muscle does not exhibit tetanus beacuse it has A. exclusively aerobic respiration. B. fast Ca2 channels. C. a long absol

ute refractory period. D. electrical synapses.
Biology
1 answer:
Nina [5.8K]2 years ago
5 0

Answer:

C, a long absolute refractory period.

Explanation:

Tetanus is not possible in cardiac muscle tissue because cardiac cells have longer action potentials and a very long refractory period compared to other cells. This helps prevent the heart from cramping and seizing up.

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Burning fossil fuels increases the amount of
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On Earth, human activities are changing the natural greenhouse. Over the last century the burning of fossil fuels like coal and oil has increased the concentration of atmospheric <u><em>carbon dioxide</em></u> (CO2). This happens because the coal or oil burning process combines carbon with oxygen in the air to make CO2.

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