Question

after a muscle fiber has worked intensely for while , it begins to lose potassium , an that dempens the fibers ability to contract

Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

This is due to muscle fatigue.

Explanation:

• A reduction in the maximum force or power produced by a muscle in response to contractile activity is referred to as muscle fatigue. 5 It can come from several points along the motor pathway and is typically split into central and peripheral parts.
• The symptom of muscular tiredness is a gradual decline in your muscles' performance. It may be connected to a feeling of weariness, frequently after a hard workout or activity. You feel weaker when you are fatigued because your muscles are moving with less force.
• High potassium (K+) levels also reduce the effectiveness of the muscle cells, resulting in cramping and exhaustion. Action potentials cause potassium to accumulate in the t-tubule system and around the muscle fiber.

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