When oxygen for muscle activity from the respiratory vascular systems is insufficient for muscle activity,the body breaks down glucose,which results in
A) hypoglycemia.
B) lactic acid buildup in muscle.
C) a large energy source.
D) exhaustion.

Question

Quizplus · Accepted Answer

During strenuous exercise,when oxygen supplies become insufficient,glucose is broken down for energy and lactic acid builds up in the muscle,which leads to muscle aching.Hypoglycemia may develop during strenuous exercise as glucose moves into skeletal muscle cells,but this does not answer the given question.The energy provided from break down of glucose is minimal,but instead the breakdown leads to lactic acid buildup in a muscle.Exhaustion may result from continued strenuous exercise,but not from breakdown of glucose to meet energy needs.

When Oxygen for Muscle Activity from the Respiratory Vascular Systems