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Physiology
The absolute refractory period occurs during the initial phase of repolarization after an action potential. During this period, the membrane is inactivated and cannot be depolarized to generate another action potential, regardless of the stimulus
Physiology
The primary mechanism of H+ secretion by parietal cells is through the action of the H+-K+ ATPase pump, also known as the proton pump. This enzyme is responsible for actively transporting H+ ions into the gastric lumen while moving K+ ions into th
General Medicine
Although the question mentions that hypoprothrombinemia is associated with vitamin K deficiency, the most common congenital cause of hypoprothrombinemia is actually deficiency of factor II, which is vitamin K-dependent. Vitamin K deficiency can le