Although the brain makes up only one fortieth of the total weight of the adult human body,it uses __________ of the circulating blood,available oxygen,and available glucose.
A)one-thirtieth
B)one-twentieth
C)one-tenth
D)one-fifth

Question

Quizplus · Accepted Answer

The brain uses about one-fifth of the circulating blood, available oxygen, and available glucose, despite making up only a small fraction of the body's total weight. This high demand reflects the brain's intense metabolic needs.

Although the Brain Makes Up Only One Fortieth of the Total