It may cause an increased rate of ambulatory. pneumonia in long term proton pump inhibitors
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.
Melanocytes and keratinocytes work together in protecting the skin from UV damage when keratinocytes D. accumulate the melanin granules on their superficial portion, forming a UV-blocking pigment layer
That would be true.
Leukocytes protect the body from diseases in multiple different ways.