At the onset of a muscle contraction, the presence of calcium triggers the opening of the Na-K channels in the membrane. Potassium is a calcium inhibitor, so as the potassium flows out of the cell, it eventually reduces the presence of calcium. This causes the closure of the Na-K channel (negative feedback mechanism). In a hypokalemic state, the lack of sufficient K doesn't inhibit the calcium channel, and in turn doesn't properly terminate the muscle contraction at the cellular level.
when you have cancer in the brain it's literally known as brain and neck cancers or the most common brain tumors are known as gliomas
The right answer for the question that is being asked and shown above is that: "C. get at least two hours of intense exercise every day." The only way to enhance performance--scholastic, athletic, or otherwise-is to <span>C. get at least two hours of intense exercise every day</span>
Answer:
1. aneamia
2.he should eat food rich in the mineral iron
