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.
Answer:
recovery heart rate
Explanation:
cause when the heart beat it like hitting a wall
Answer:
The answer is true.
Explanation:
A bow works like a spring. The flexing limbs of the bow store potential energy when you begin to pull back on a bowstring. But by exerting more energy, storing it in the bow and then only using the lightweight string to push the arrow, more power is transferred to the arrow.
Answer:
Performance evaluation tests are fundamental to each performed errands.
Explanation:
Performance evaluation tests in competitors are entirely significant in light of the fact that it mentions to them what their qualities and shortcomings are. With this information, they will have the option to discover approaches to destroy their shortcomings and expand their qualities.