Carbohydrate loading maximizes the amount of which substance stored in skeletal muscles?
a. calcium
b. hemoglobin
c. glucose
d. glycogen

The correct answer is d. glycogen

Explanation:

Carbohydrate loading is a very common practice in athletes. It consists of eating carbohydrate-rich food specially before doing exercise. This practice maximizes the stored quantities of glycogen- polysacharide of storing of glucose- in muscle and liver.

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

i think its the first one