Question

Of the following items listed below, which is the best description for why skeletal muscle stores glycogen? Of the following items listed below, which is the best description for why skeletal muscle stores glycogen? - Glycogen is part of muscles rigid supporting framework. - Glycogen provides a smooth surface for filaments to slide on. - The glycogen is an insulating layer that helps regulate body temperature. - Skeletal muscle is a heavy consumer of energy.

Answer 1

Answer:

Skeletal muscle stores glycogen because it is a heavy consumer of energy.

Explanation:

Skeletal fiber contractions are based on different physiological and biochemical phenomena that happen in every cell and that need an amount of energy to occur. During muscle contraction, myosin binds to the uncovered actin-binding sites, producing littles power strokes that, continuously, lead to muscle contraction. To make this process possible, the muscle needs energy.  

Glycogen is a very important energetic reserve polysaccharide for animals. It is stored in the liver and muscles, and when the organism needs energy it degrades glycogen into glucose, which is an available form for the metabolism.  In the liver, glycogen is used to maintain constant levels of blood glucose. While in muscles, glycogen plays an important role in the glucose storage as a source of energy, needed and used only for contraction.

During muscle contraction, ATP molecules obtained from glucose are split to ADP and inorganic phosphate.