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.
Ones that block 99% to 100%<span> UV rays.</span>
Answer:
I think the answer would be option A.
Explanation:
A healthy diet and daily exercise has its benefits for the body. It´s good to be healthy, but you should not exercise too much because you would be overworking what your body could handle. Having a healthy diet includes protein from all the food groups. You would get protein, calcium, and etc from the food groups.
( I am so sorry if my answer is wrong, but that´s what I would choose :) )
<span>hormone insulin<span>The hormone insulin is a main regulator of the glucose (sugar) levels in the blood. Insulin is produced in the pancreas. To be more specific, it's produced by the beta cells in the islets of Langerhans in the pancreas. When we eat, glucose levels rise, and insulin is released into the bloodstream.</span></span>
Answer:
I would give her my support and stand up for her
Explanation:
