Digitalis lactone and a triple-repeating sugar called a glycoside. Digitalis works by inhibiting sodium-potassium ATPase. This results in an increased intracellular concentration of sodium ions and thus a decreased concentration gradient across the cell membrane. This increase in intracellular sodium causes the Na/Ca exchanger to reverse potential, i.e., transition from pumping sodium into the cell in exchange for pumping calcium out of the cell, to pumping sodium out of the cell in exchange for pumping calcium into the cell. This leads to an increase in cytoplasmic calcium concentration, which improves cardiac contractility. Under normal physiological conditions, the cytoplasmic calcium used in
We Can Do It! controlling posters promoting management authority, employee capability and company unity, and the workers would likely have understood the image to mean "Westinghouse Employees Can Do It", all working together. The upbeat image served as gentle propaganda to boost employee morale and keep production from lagging. The badge on the "We Can Do It!" worker's collar identifies her as a Westinghouse Electric plant floor employee; the pictured red, white and blue clothing was a subtle call to patriotism, one of the frequent tactics of corporate war production committees. During World War II, the "We Can Do It!" poster was not connected