3. Where are the major organs that glycogen stores in mammals?(A)kidney and liver(B)stomach and kidney(C)muscle and liver(D)muscle and kidney

13. How does inhibition of the Na+/K+ ATPase increase the force of heart muscle contraction?(A)It increases cytosolic Na+ and therefore decreases Ca2+ export.(B)It increases cytosolic K+ and therefore decreases Ca2+ export.(C)It decreases cytosolic Na+ and therefore decreases Ca2+ export.(D)It decreases cytosolic K+ and therefore decreases Ca2+ export.